An ad for budget airline German Wings has three air hostesses. Guess what their hair colors are.
An old ad for hair dye kicks off with a set of not-yet-born triplets fantasizing about what hair colors they will come out with. One looks forward to being a blonde, another to being a ravenhead, and the last to being a redhead. Sadly, they're all born with boring old brown, which is where the dye comes in when the girls are older.
An advert for Heineken had a Blonde, Brunette and Redhead sitting in a drinking establishment, along with a trio of priest, minister and rabbi; and a man with a duck under his arm. The claim was that the beer was "the real reason they all walked into a bar." The Blonde doesn't get it.
An ad for Heineken (I think; definitely a very green-tinted commercial) had a fembot that not only dispensed beer but also had two other fembots inside of her, the "original" being blonde and the two "copies" being a brunette and a redhead.
In Yes! Pretty Cure 5 has (excluding Nozomi and Komachi) Urara (blonde), Karen (bluish-haired brunette) and Rin (redhead). Also from the same series, Nuts (blonde), Coco (brunette) and Syrup (redhead) in their human forms may count as a male example.
Tsubomi Hanasaki (a Scarlet/Dark Pink/Fuschia-ish Redhead, who is technically a Rose-Haired Sweetie in both in her civilian and Cure form), Erika Kurumi (Dark Blue Brunette) and Itsuku Myoudouin (Sandy Blonde) from HeartCatch Pretty Cure! count.
Don't forget Hibiki (redhead), Kanade (dark blonde) and Ellen (dark purple brunette) from Suite Pretty Cure ♪.
From Rose of Versailles, Oscar is blonde, Rosalie has dark blonde hair in the anime and brown hair in the movie and thus counts as the brunette and Marie Antoinette is often accused by Mme. DuBarry of having red hair, so she can be the redhead.
In Hime Chen Otogi Chikku Idol Lilpri, we have the main trio of Ringo (pink, which can count as red like with Kurumi above), Leila (blonde) and Natsuki (purple, which can count as stylized black hair).
Yutaka and her classmates from Lucky Star could fit this, with the pink-hair Yutaka (the redhead), blonde Patty and black-haired Hiyori, with Minami as the odd girl out with her green hair. Or one could count it as being that Minami's classmates are a blonde, brunette and redhead...
The three heroines of Amuri in Star Ocean. Amuri is the brunette, Perrier is the blonde and Suzu is the redhead.
Cho Hakkai, Genjo Sanzo and Sha Gojyo are the main characters in Saiyuki, who each respectively have brown, blonde and red hair. Then, simply throw Son Goku into the mix for a distinction between light brown and dark brown.
An interesting variation in Slayers: Lina (red), Gourry (blonde) and Amelia (black with stylized purple highlights). The chimera Zelgadis has light purple hair, but Word of God allegedly put his human hair color as a dark brown, despite an anime flashback having his human hair color the same shade of purple his chimeric hair is.
The three villains in Gankutsuou, at least when they were young - de Villefort (blond), Fernand (brunette) and Danglars (redhead).
Code Geass has the three female members of the student council at the beginning of the series - Milly (blonde), Nina (brunette), and Shirley (redhead).
The three main girls in Yuyushiki falls into this trope: Yui (blonde), Yukari (brunette) and Yuzuko (redhead).
The three main characters of Death Note are this, albeit not all female: Misa is blonde (and most certainly the dumb one), L has black hair (and he's certainly brainy), and Light is a redhead (and, well, "fiery" is onewordforhim).
Superman's three major love interests: Cat Grant (blonde), Lois Lane (brunette), Lana Lang (usually redheaded).
Black Canary, Oracle and Huntress in Birds of Prey. However, Dinah's actually a brunette and uses hair dye. Black Canary would later leave the team, but Lady Blackhawk was still around to fill the blonde role.
The three Batgirls so far have been Stephanie Brown (blonde), Cassandra Cain (brunette and a minority) and Barbara Gordon (redhead). They were also the three major female characters in Cassandra Cain's Batgirl series.
Roy Thomas has stated that when introducing the character of Red Sonja into the Conan the Barbarian comics, he created a redhead because the two other major women in Conan's life were Bêlit (a brunette) and Valeria (a blonde).
ElfQuest has the trio Murrel, Vurdah and Maleen (Skywise's little harem in Sorrow's End).
The first three Flashes: Jay Garrick (Brunette), Barry Allen (Blonde) and Wally West (Redhead).
Spider-Man brunet, and his best friends are red-haired Harry Osborn and blond-haired Flash Thompson. As Spidey, his best friends are red-haired Daredevil and the blond-haired Human Torch. And his Amazing Friends are blond Iceman and red-haired Firestar. Whew.
Axis Powers Hetalia: England is blond, and when fans create OCs representing his siblings, they'll usually do this trope. The directions very. Some follow the basic stereotype, with Wales a brunet and Scotland a redhead. However, it's just as common to make Wales a blond, for the gag of him getting mistaken/interchanged with England a la America and Canada. In this case, the three major Celtic countries will usually form this trio, most often when Scotland is a brunet because the fan wants to reserve the red hair for the Irelands, or when they make Ireland a brunet/te (both male and female Ireland have been considered by the author) and keep Scotland a redhead if they prefer the slight statistical differences over stereotypes.
Frozen fanfic A Snowflake In Spring has redheaded Anna and blonde Elsa as its main characters. The character who receives the most focus after them is Hercules' Megara, a brunette. The trope is played more loosely than most cases, however: apart from being attracted to Anna, Meg and Elsa have no connection to one another, and have only been in the same room together once.
Films — Animation
Cinderella, Drizella and Anastasia from Disney's Cinderella. Interestingly, by the sequel the one that's evil is the brunette.
The Little Mermaid: Ariel is a redhead while her six older sisters fill in the blonde and brunette qualifications, plus Ursala who has white hair in her normal form and dark brown hair as "Vanessa".
Ms. Forcible, Coraline and Ms. Spink count, although Coraline is more of a bluenette.
Also, the Other Ms. Forcible, the Other Mother, and the Other Ms. Spink.
Edith, Margo, and Agnes (although she has black hair and a red headband) from Despicable Me.
Later, Edith (blonde), Margo and Agnes (brunettes), and Lucy (redhead) in the sequel.
In The Princess and the Frog, Naveen sings about having a redhead and brunette on each arm with "a blonde or two to hold the candles" while surrounded by butterflies in the corresponding colors. Of course, he ends up falling for the African American Tiana. The trio of bimbettes that follows him around also fits this trope.
In the oft-compared half-animated films Who Framed Roger Rabbit and Cool World, we have these three in the animated female leads: Holli Would (blonde), Lonette (brunette) and Jessica Rabbit (redhead). However, Lonette is the more dull one, Holli is sassy and Jessica was the smart one.
The three anti-heroines of Bachelorette (imagine Brides Maids if the 'maids were bitter and jealous of the bride for finding a hot husband despite being fatter and having less fashion sense then them): type-A blonde (Kirsten Dunst), redheaded party girl/sex maniac (Isla Fischer, evidently the go-to gal for this trope), and mousy/brainy-looking brunette (Lizzy Caplan).
Batman Returns: There are three female criminals in the Penguin's gang. The Poodle Lady is light blonde, the Snake Woman has fiery red/orange hair, and the Knifethrower Dame never shows her hair but dresses like a Native American, so it's easy to imagine the hair being black.
Amber, Tracy and Penny in Hairspray and all its adaptations.
In Heartbreakers, Sigourney Weaver (Max) and Jennifer Love Hewitt (Paige) each switch between all three for each of the different people their characters impersonate. Both are brunettes as themselves, Max is redhead as "Olga" and blonde as "Angela" while Paige is redhead as "Wendy" and blonde as "Allison".
The three go-go dancing stewardesses on Tony Stark's private jet in Iron Man
Peter Jackson's Middle-Earth film-verse has Arwen (brunette), Tauriel (redhead), Galadriel and Éowyn (blonde). The background elves follow a similar pattern with the elves of Lothlorien being blonde or silver-haired, the elves of Rivendell are mostly brunette, and the Silvan elves of Mirkwood being red-haired.
There's also a couple of male versions - the three hunters: Legolas (blonde), Aragorn (brunette), and Gimli (redhead); and the four Hobbits: the fairly strawberry blond Sam and Merry, the dark brunette Frodo, and the lighter golden brunette Pippin.
A Knight's Tale has the three squires of blond William Thatcher, fat but loyal brunette Roland and violent young redhead Wat.
Iris and her friends in The Lady Vanishes are a rare pre-War and black-and-white example.
Period Drama Liberty Heights presents a male version of this trope, with the blond Ben and his two brunet and redheaded best friends (plus, they're all Jewish).
Upon Cady (redhead) joining The Plastics in Mean Girls, she completes this with Regina and Karen (blondes) and Gretchen (brunette). Later when Regina leaves the group, they become the perfect trio.
Cheryl "Rhode Island", Grace Hart, and Mary Jo "Texas", the three finalists in Miss Congeniality.
In the James Bond spoof Our Man Flint, the protagonist has live-in "playmates", one of each hair color. (Actually, there are two brunettes, one being Asian).
The Bellas in Pitch Perfect: brunettes Beca, Stacie, Cynthia Rose and Lilly; blondes Aubrey and Fat Amy, and redhead Chloe.
The Pleasure Seekers, a remake of Three Coins in a Fountain set in Spain, stars Ann-Margaret (redhead), Carol Lynley (blonde) and Pamela Tiffen (brunette).
In the Scooby-Doo movie from 2002, we have the addition of Mary Jane, played by Isla Fisher, a blond, and of course, Velma (Brunette) and Daphne (Redhead). They do fulfill the traditional roles somewhat - Mary Jane is a little spacey (though more innocent than actually stupid), Velma is the brains and Daphne is really sassy in this version. Interestingly Daphne was more the dimwit in the show. If one swaps Mary Jane for Fred, then you get the Dumb Blonde.
The Andy Sidaris movies Guns, Do or Die and Hard Hunted feature heroines Donna Hamilton (blonde), Nicole Justin (brunette) and Edy Stark (redhead). The actresses who played the characters (Dona Speir, Roberta Vasquez and Cynthia Brimhall, respectively) are all Playboy Playmates.
The 1932 film Three Wise Girls is in black and white, but according to the poster one is brunette, one redheaded, and the third (played by Jean Harlow) is blonde.
James (blonde), Laurent (brunet) and Victoria (redhead) in the film version of Twilight. In the books, James is described as having brown hair that is buzzed short, rather than blonde hair in a ponytail. Esme (redhead), Alice (brunette) and Rosalie (blonde) also qualify.
Dracula's "brides" are this way in Van Helsing and probably in other adaptations as well. In the Original, there was only the blonde and two brunettes.
The movie Xanadu has a song, Dancin'. There is a trio of female singers with blond, red and brown hair.
Mystique from the X-Men films loves disguising herself as a blond. Her mutant form has red hair. When de-powered, she has raven hair.
In Shannon Hale's Books Of Bayern series, Isi is the blonde, Enna is the brunette (actually, her hair is jet black) and Dasha is the redhead. With the addition of Rin, it becomes 'blonde, brunette, redhead and black hair'
In Charles Ogden's Edgar & Ellen, Stephanie is the redhead, Cassidy is the blonde and Pepper is the brunette.
In Robert A. Heinlein's Stranger in a Strange Land, Jubal Harshaw's secretaries are Anne (blonde), Dorcas (brunette) and Miriam (redhead). Jubal mentions many times that this is exactly the way he wants it. Whenever one of his secretaries leaves his service, he will only hire a replacement with her hair color to keep things evened out.
Luna, Hermione and Ginny. And true to stereotype, Hermione's a Brainy Brunette, Ginny's a Fiery Redhead and while Luna certainly isn't dumb, she's definitely a little spacey. In the films the main trio is bumped up to this as Emma Watson's hair becomes blonde from the fifth film onwards - making her the Brainy Blonde, Harry the Fiery Brunet and Ron the Dumb Redhead.
Ben Skywalker, Luke's son and Obi-Wan's namesake, has officially picked up on this tendency. So far, he's been involved with one canonical love interest (Vestara Khai, brunette), had one off-hand flirtation with another Jedi (Seha Dorvald, redhead) and been the recipient of one really twisted molestation attempt as a part of a Sith plot ( Tahiri Veila, blonde). Hopefully, his options will get a little better with time...
Jaina and her two would-be sisters-in-law form this with Jaina (brunette), Tahiri (blonde), and Tenel Ka (redhead).
Yasmine Galenorn's The Otherworld Series has three full sisters with very different hair colors. Camille, the eldest, has black hair, Delilah has sunny blonde hair and Menolly, the youngest, has bright red hair.
The It Girl series by Cecily Ziegesar features power trio Callie (blonde), Tinsley (brunette) and Brett (redhead). Newcomer Jenny is also a brunette. Guess which of the three feels most threatened socially and works hardest to try to tear Jenny down (at least to begin with).
Pauline (blonde), Petrova (brunette) and Posy (redhead) in Ballet Shoes.
In the Deepgate Codex, we have Rachel (blonde), Carnival (black hair), Mina (brunette) and Alice (redhead).
Circle of Magic: Sandry (light brown), Daja (black) and Tris (redhead). And Briar (boy) is the odd man out.
Betsy (brunette), Tacy (redhead) and Tib (blonde) in the Betsy-Tacy books. Plays with the hair types a bit: Tib is definitely not dumb — she's generally the most sensible and practical of the group and Tacy, far from being fiery, is fun and charming with her friends, but suffers from crippling shyness. Betsy may be brainy in that she's a good writer, but she's generally average at school work. Also somewhat subverted as a cliche in that the three characters are based on three real women, who were a blonde, a brunette and a redhead.
The Doctor Who Expanded UniverseEighth Doctor Adventures feature a blonde (Sam), a redhead (Compassion) and a brunette (Anji, who happens to be of Indian descent) who travel with the Doctor, just none of them at the same time. There's also Trix, who's sort of mousy-blonde but usually wears wigs. And if we were counting the guys, Fitz has dark brown hair and the Doctor's hair is chestnut brown and, if backlit a certain way, looks practically orange, so there would pretty much be two full sets.
In Percy Jackson and the Olympians, Annabeth is a blonde, Thalia has dark hair and Rachel is a redhead. However, Annabeth is smart, Rachel is a bit ditzy and Thalia's the one with the fiery temper.
The starting premise of Aimee Bender's short story "Off", where the protagonist makes a goal to kiss a blonde, brunette and red-haired man in one night.
Cupcake Diaries is about Katie (a brunette) and her three new friends, Emma (who has blonde hair), Mia (who has black hair) and Alexis (who has reddish hair).
The boys of the Spy High series: Ben (blond), Jake (brunet) and Eddie (redhead). For the girls, there's blonde Lori, brunette Cally and Bex; who dyes her hair a variety of bright, unnatural colours, sometimes red.
The trio of Bess, George and Nancy in the Nancy Drew series. True to form, Bess is the ditz, George is the smart, practical, athletic and tomboyish one, while Nancy is the series Canon Sue.
The Hatter sisters from Howl's Moving Castle. Sophie (redhead), Lettie (brunette) and Martha (blonde).
Three of the Princesses of Amber fit this trope; black haired Deidre who seems to be something of a tomboy, redheaded Fiona, the 'brainy' one and Dumb Blonde Flora. The fourth princess, Lewella, has green hair.
The three contenders that was prophesied to overthrow Cersei as queen in A Song of Ice and Fire have this ensemble: Daenerys Targaryen (blond), Margaery Tyrell (brunette) and Sansa Stark (redhead).
Twilight has a female example with Rosalie (blonde), Alice (brunette) and Esme (redhead) and a male example with Jasper and Carlisle (blond), Emmett (brunet) and Edward (redhead).
Daniel Gonzalez's Ravencraft series; Laura Talbot (the werewolf) is a blonde, Lucilla (the vampire) is a redhead and Dr. Abigail Valdemar (zombie) is a brunette.
The Swensen daughters in the Hannah Swensen series.
In the Web Serial NovelCorrespondence From The Goddess, main characters Lydia and Elana Devin have black and red hair respectively, and when recurring mysterious plotter Rachel Hawkins shows up, she fills in the blonde point of the triangle.
The three main female characters in the Monster Mash neo-noir City of Devils follow the pattern. The doppelganger Imogen Verity usually appears blonde, the siren secretary Serendipity Sargasso has black hair (albeit with green highlights), and the witch Hexene Candlemas is a redhead. Additionally, the close harmony group/witch coven the Salem Sisters consist of Hyacinth (blonde), Verbena (brunette), and Lily (redhead).
A male example in Relativity: When Michael (blond) was a teenager, his best friends in school were Tony (brunette) and Andy (redhead).
8 Simple Rules has Cate (brown), Bridget (blonde) and Kerry (red). Paul and Cate's children can also count, with Rory being the brunette. In an interesting case, Bridget and Rory are the Dumb Blonde and Dumb Brunette respectively, while Kerry is both a Brainy Redhead and a Fiery Redhead.
Austin & Ally: Austin's the blond, Ally and Trish split brunette duties, and Dez is the redhead.
The three ladies in the main cast of the original Battlestar Galactica - Cassiopeia (lightest), Athena (darkest), Sheba (somewhere in-between) - Serina served as an in-between role before she is killed off and then replaced by Sheba a few episodes later.
Sheba (again an in-between) is also in a Two Guys and a Girl variation with Starbuck (blond) and Apollo (brunette).
Enforced with the three female leads. When they were cast, all three had the same brownish auburn hair. Alyson Hannigan claims that Joss Whedon said "one of you is going to have to become a redhead" so Alyson volunteered. Sarah Michelle Gellar had brownish hair in season 1 but her appearance got tweaked to look more like a Valley Girl - thus she became a blonde. Charisma Carpenter says she had blonde highlights in but was convinced to go completely dark to play Cordelia.
If one allows male participants, the most commonly seen Blonde, Brunet, Redhead trio on Buffy is Buffy, Willow and Xander. Rather amusingly, the traditional traits associated with each hair color exist in this trio, but palette-swapped; Buffy is the Fiery Blonde, Willow is the Brainy Redhead and Xander is the Dumb Brunette.
A male counterpart has Angel (brunette), Spike (blond) and Oz (redhead).
Oz is mainly a redhead, but he had also been both blond and brunette.
During the fifth (and last) season of the original 1970s series, the Angels were Cheryl Ladd (blonde), Jaclyn Smith (brunette) and Tanya Roberts (redhead). The producers had wanted to use this trope since the beginning.
Charmed generally averts this since the Halliwells are brunette siblings. In the fifth season finale, when the sisters become Greek Goddesses, Phoebe's hair is turned blonde and Paige was a redhead at the time, thus invoking the trope. Phoebe became the Goddess of Love and thus making her a little ditzy, Paige became the Goddess of War to increase her temper, while Piper became Goddess of Earth and was thus more grounded and mature.
Paige herself has experimented with all 3 colors. She was brunette in season 4, redhead in season 5, blonde in season 6 and brunette again for the rest of the show.
The trio of wood nymphs in a season 5 episode. The redhead gets killed off and amusingly enough they pick Paige (who is redhead at this point) to be her replacement.
Conan (redhead), Andy (blond) and La Bamba (brunette) in Conan.
Laurie, Ellie and Jules on Cougar Town. True to form, Laurie's a Dumb Blonde, Ellie's a Fiery Redhead (although she's more of a light brown with reddish highlights) and while Jules isn't exactly brainy, she's smarter and more calm and collected than the other two.
Susan, Jane and Sally on Coupling. Jane is the Ditzy Brunette, thus avoiding the usual personality trio. Plus, Sally can't exactly be called the fiery one, nor is Susan a dumb blonde.
For a good portion of Season 5, Criminal Minds gave us JJ the blonde, Prentiss the brunette and Garcia, whose hair was red for approximately half a season before she returned to her traditional blonde (additionally, flashbacks reveal Garcia used to be a very un-perky goth with jet-black hair). This is also the hair color scheme of the UnSub's doll collection and thus her victims in "The Uncanny Valley".
The leading ladies of three shows in the CSI Verse: Catherine (redhead — Vegas), Calleigh (blonde — Miami), Stella and, later, Jo (brunette — New York).
On CSI: Las Vegas, from seasons 5 through seven, they had Sofia (blond), Sara (brunette) and Catherine (redhead). Also in Season 12 we had Morgan as the blond, with the other two girls still fulfilling their roles.
The three main companions in Russell T Davies-era: Rose (blonde), Martha (brunette) and Donna (redhead).
11th Doctor (dark brown/black), Rory (dark blond) and Amy (extremely Fiery Red Head), plus River (currently blonde; she was also African-British for a while).
Notice that the New Who females are Colour-Coded for Your Convenience; the Doctor's love interests are blonde (Rose, Astrid, River), his best friends are redheads (Donna, Amy), and the unrequited loves are brunette (Martha, Christina, River—notice she only became his love interest when she became blonde). Whether the new companion Clara will carry on the tradition is yet to be seen...
The Fifth Doctor (blond), Tegan (brunette) and Turlough (redhead) Trio count, even though two of them are guys.
A UK reality programme, Girlfri3nds, covers the search for relationship partners for a 3-pack of women in front of the cameras. Aired on ITV 2 during 2012.
Shelby Corcoran, Emma Pillsbury and April Rhodes on Glee. Shelby is a talented, hard working and methodical show choir instructor and April is an unreliable but well-meaning drunk, but Emma isn't quite that fiery (except for that one time...).
The three major female characters of Grimm: Adalind (blonde), Juliette (redhead), and Rosalee (brunette).
H2O: Just Add Water has a light blonde, strawberry blonde and dark brunette, and in one episode, the strawberry blonde tried to go full-on red but couldn't because of her mermaid powers. Charlotte from Season 2 adds a redhead to the spectrum.
iCarly: in "iReunite with Missy", there's blonde Sam, brunette Carly and redhead Missy. Wendy, a recurring character, can be considered as the show's resident redhead.
Mad Men has Betty (blonde), Peggy (brunette) and Joan (redhead). The stereotypes associated with each color define the women. Also, season 4 episode "The Beautiful Girls" has the titular women as the before with Dr. Faye Miller replacing Betty as an intellligent blonde.
Married... with Children in the early seasons had the female half of the cast fit this trope. Marcy was a brunette before her hair started to get lighter at Season 3 and just became blonder and blonder from then on. Kelly and Peggy, however, remained blonde and redheaded respectively from beginning to end. Al, Bud, Steve and Jefferson avert this trope, since the male half of the cast all have plain brown hair.
In the 1980s television miniseries North and South, the three most important women in Orry Main's life are his youngest sister Brett (blonde), his mother Clarissa (brunette) and the love of his life/wife Madeline (redhead). One could say that his (brunette) younger sister Ashton, (an eviler version of Scarlett O'Hara) could be important too, but it is clear throughout the series that Orry recognizes Ashton's cruelty and even disowns her. Twice.
The first season of One Tree Hill had Peyton the blonde, Brooke the brunette and Haley the redhead. Later, Haley dyed her hair blonde and then brunette, so Season 3 introduced us to the redheaded Rachel.
Pan Am has Laura (blonde), Maggie and Colette (brunettes) and Kate (redhead). Now that she's returned, Bridget also fulfils the blonde aspect.
Shirley (blonde), Laurie (brunette) and Tracy (redhead) on The Partridge Family. Was also inverted with the boys Keith (brunette), Danny (redhead) and Chris (blonde) during Seasons 2-4.
Power Rangers has done this one more than one occasion, often replacing red with pink.
Power Rangers in Space could be argued, since Ashley's hair is so much lighter than Cassie's that it often looks blonde by comparison, and Astronema settled on being a redhead for the latter half of the season.
Power Rangers S.P.D. has an all male example. Jack (minority), Sky (blond), Bridge (brunet) and Sam (redhead). And if one mixes the teams together, you could add Charlie (a brunette, but with red streaks) to Syd's blonde and Z's brunette.
Power Rangers Mystic Force has Madison (brunette) and Clare and Leelee (blonde) and Vida dyed her hair pink in the finale to complete the trio as a fiery redhead. The adults also fall under the co-gendered version with Niella (blonde), Leanbow and Daggeron (brunet) and Udonna (redhead).
Privileged had Megan (redhead), who is often shown to contrast her relationship with her real sister, Lily, (blonde) and her tutees, the Baker twins (brunette), who she becomes more of a big sister to as the series goes on.
Sabrina (blonde), Roxie (brunette) and Morgan (redhead) in Season 5 onwards of Sabrina the Teenage Witch. Subversions of roles again, as Sabrina is the Brainy Blonde, Morgan the Dumb Redhead and Roxie the Fiery Brunette.
Season 1 had Sabrina as the blonde, Jenny as the redhead and the brunette role filled by either Libby or Harvey (if one allows males).
The three ladies of the original Saturday Night Live cast were Jane Curtin (blonde), Gilda Radner (brunette) and Laraine Newman (redhead).
The female leads of Smallville later on in the series, Chloe (blonde), Lois (brunette) and Tess (redhead). The odd thing is, Lana is traditionally a redhead but has black hair in Smallville, so it doesn't fit until she left and Tess came in.
Spartacus: Blood and Sand: In the show itself Lawless' character alternates between blonde and red wigs, and her natural brown hair in the second season.
In Vengeance Lucretia is the redhead (after being forced to wear her red wig by Asher) with Seppia as the brunette and Illythia as the blonde.
Star Trek: The Original Series first pilot "The Cage". The Talosians, who want Captain Pike to breed them a race of slave workers, offer him blonde fellow captive Vina and, later, his own crewmembers — the coldly intelligent Number One (Brainy Brunette) and his pretty female yeoman (a redhead with "unusually strong female drives").
The first season of Star Trek: The Next Generation had Tasha Yar (blonde), Counselor Troi (brunette) and Dr. Crusher (redhead). In kind of an odd subversion, though, Tasha acted more like the Fiery Redhead, Dr. Crusher was more like a Brainy Brunette, and, well, let's just say Troi had traits most commonly associated with blondes.
Star Trek: Voyager had red-highlighted Captain Janeway, brunette B'Elanna and blonde Kes, who was replaced by fellow blonde Seven of Nine.
That '70s Show had Laurie (blonde), Jackie (brunette) and Donna (redhead). They even did a Charlie's Angels sequence at one point. This cycle was broken when Laurie's character was officially written out and Donna went blonde.
The Tudors have this with Henry's children, with Mary being a brunette, almost a ravenhead as a child, Elizabeth being a redhead, although her hair looked more blondish in her toddler years, and Edward being a blonde. The six wives almost fall into this with the series banner making Anne of Cleves and Katherine Howard's hair look like red hair, despite how, on screen, they were blonde, along with Jane Seymour and Katherine Parr, while Katherine of Aragon and Anne Boleyn were brunettes.
In the "A Nice Place to Visit" episode of The Twilight Zone, even though it's in black and white, you can tell that the three girls hanging around with Valentine are the obligatory tri-color trio.
In What I Like About You, there are Val and Lauren (blondes), Holly (light brunette) and Tina (redhead from mid-Season 2 onwards).
The X-Files: In the episode "Improbable", Agent Reyes finds out that a Serial Killer's pattern consists murdering women in a set of three, and each set has a blonde, a brunette and a redhead. Redhead Agent Scully and herself a brunette, they are trapped in an underground garage and fear they might be his next targets.
In one episode of The Young Indiana Jones Chronicles, Indy is simultaneously dating a sweet blonde, a talented redhead and an ambitious brunette. Until they all find out.
Christina Aguilera, Avril Lavigne and Britney Spears each have music videos where they switch among the three hair colors. In fact, in Christina Aguilera's case, she's on camera as all three at once in the music video for "Candyman", as an homage to the Andrews Sisters. So does Britney, albeit very briefly.
For Pink, Christina Aguilera, Lil' Kim and Mya's cover of "Lady Marmalade", Christina and Lil' Kim are blondes, Mya is brunette and Pink is, well, pink (it's lightish red!).
The Belgian girl group K3 and their German spin-off Wir 3
Girls Aloud has Sarah (blonde), Cheryl (brunette) and Nicola (redhead); Kimberley and Nadine tend to waver between blonde and brunette.
The Spice Girls have this going on with Mel B (minority) and Emma (blonde), Mel C and Victoria (brunettes) and Geri (redhead obviously).
In Tom Smith's song "Lars Needs Women", the eponymous hero "want blonde, brunette, redhead — heck, whole set!"
In the all-girl wizard rock band The Parselmouths (based on Harry Potter), there were at one point three members: Kristina Horner (blonde), Brittany Vahlberg (black) and Eia Waltzer (redhead). However, Eia's hair is naturally brown.
The German girl group MeKaDo, known for placing third at the Eurovision Song Contest in 1994. The group name comes from the first two letters of each member: brunette Melanie Bender, blonde Kati Karney and "redhead" (more light brown) Dorkas Kiefer.
The Sugababes had this with Heidi (Blonde), Mutya (Red) and Keisha (Minority).
Atomic Kitten started off with Natasha (red), Kerry (blonde) and Liz (brunette), but eventually became three blondes and then Natasha dyed her hair black, leaving Jenny with the lighter blonde hair and Liz with a darker shade.
The girls in S Club had this as well. To start off, Jo and Hannah were blonde (Jo being ash blonde with Hannah being honey blonde), Rachel was brunette and Tina had black hair. At the end, Tina had reddish blonde hair.
The Bangles: Vicki (medium blonde), Debbi (pale blonde), Susanna (brunette) and Michael (redhead).
The country music group SHeDAISY consists of three sisters: Kristyn (a blonde), Kassidy (a brunette) and Kelsi (a redhead).
Radio Disney's Pop Dreamers: Ella (blonde with pink streaks), Gabrielle (brunette) and Ari (redhead with gold streaks).
The Brooklynn indie band Vivian Girls.
Destinys Child went for this in the video for "Bootylicious", where Beyonce was the blonde, obviously, though with a much lighter shade than usual, Michelle remained brunette and Kelly was the redhead.
Deliberately modelled on them, there are The Puppini Sisters: Marcella (brunette), Kate (blonde), and Rosanna/Stephanie/Terrianne/Emma (all redheads).
Girl Punk band The Slits had this with guitarist Viv Albertine as the blonde, bassist Tessa Politt as the brunette, and lead singer the late Ari Up as the redhead (although she was more light brown haired than red.). In one video, it even shows the three riding on horses matching their hair colors with Viv on a white/palomino horse, Tessa on a black horse, and Ari on a chestnut horse!
In Florence + the Machine's video for "Drumming Song", there are two blonde and a brunette back-up dancer, with Florence being the redhead.
Stevie Nicks (blonde) and her long-time backup singers Sharon Celani (brunette) and Lori Perry Nicks (redhead).
Finnish pop rock band Indica has Jonsu (redhead), Jenny (blonde), Heini (blonde), Laura (brunette), and Sirkku, who is known to switch but mostly is blonde.
The trio Extreme Expose had Kelly Kelly (blonde hair), Brooke Adams (brown-haired Caucasian) and Layla El (brownish-black hair), Moroccan/Spanish). Brooke would have counted as the "redhead" with her brown hair being lighter than Layla's.
LayCool had Michelle McCool as a blonde and Layla El as a brunette. They were joined by Vickie Guerrero, then a redhead (now black).
Trish Stratus and Lita often teamed up together with Trish as the blonde and Lita as the redhead. In six-diva tag matches, they would be joined by Ivory (brunette).
One episode of Monday Night Raw in the late summer of 2004 pitted the team of Stacy Keibler (blonde), Nidia Guenard (light brunette) and Victoria (dark brunette) against their Evil Counterparts, Trish Stratus (blonde), Molly Holly (medium brunette, although she was blonde initially) and Gail Kim (dark brunette). Incidentally, Victoria, Stacy, and Nidia also qualified as, respectively, Big, Thin, and Short.
The reality show Total Divas actually plays this for drama somewhat. When new Diva Eva Marie is hired, she's asked to dye her brunette hair blonde because management feel she resembles the Bella Twins too much. Nattie also gets worried since she is a blonde. Eva decides to Take a Third Option and become a redhead. With a cast of seven, this adds up to blondes Nattie and eventually Cameron, brunettes Brie and Nikki, redhead Eva Marie and black Naomi and Jojo. Season 2 drops Jojo and adds another blonde - Summer Rae. Season 3 adds another brunette - Rosa Mendes.
The recent Encores production of Merrily We Roll Along played this, and according to stereotype no less: Beth is blonde, Mary is brunette and Gussie is a redhead.
As mentioned above, Amber, Tracy and Penny in Hairspray (Penny has auburn hair).
Elle's Girl Posse in Legally Blonde: The Musical is composed of the blonde Margot, African-American Pilar and the in between light brunette Serena. Elle, meanwhile, is the blonde of the interns chosen for Callahan's internship, along with brunette Vivienne and light-haired Enid.
In the version of The Pirates of Penzance with Jon English, Mabel (black hair) has three sisters that are blonde, brunette and redheaded.
Mary the Dumb Blonde, Kathy the Brainy Brunette and Joanne the Fiery Redhead in ACT's production of the musical of Vanities. In the original play, Joanne and Mary were both blonde and Kathy was a brunette. Also, in previous productions of the musical, Joanne was the brunette and Kathy the redhead.
In Wicked (at least with the original cast), the Witches of Oz would work. Elphaba is the Brainy Brunette,Galinda is a Dumb Blonde, but by the end, she gets better and Nessarose fits Fiery Redhead, since she's such a Yandere.
Similarly, Link has also embodied all three parts of this trope. In the first two games, he had reddish-brown hair and morphed over subsequent installments to different shades of blonde, but his hair in The Legend of Zelda: Twilight Princess is more brown than anything, although he appears blondish in Brawl. If you throw supplemental material into the mix, he was a full-on redhead in the Zelda comics and a definite brunette in the animated series.
The three main female characters of Twilight Princess: Ilia (blonde), Zelda (brunette) and Midna (redhead).
Kairi (redhead) has two lookalikes, Namine (blonde) and Xion (black-haired).
There's another two combinations: Riku (white), Sora (brunette) and Kairi are the main trio, and Roxas (blonde), Axel (redhead) and Xion are the mirror group. In fact, before Xion, most people added Demyx (brunet) to Roxas' group.
Kingdom Hearts: Birth by Sleep then gave us Terra (brunet), Aqua (blue hair) and Ven (blond). In the same game, we got Vanitas as a black-haired version of Sora, pushing the brown-haired Sora up to the "moderate color" column with Roxas and Ventus as the blond.
The party's female members also fit in the looser sense of blonde (Natalia), brunette (Anise) and something in-between (Tear, who has light brown hair).
The iDOLM@STER 2 - Project Jupiter is an odd case where the redhead has green hair here.
Chrono Trigger has Ayla (blonde), Lucca (brunette) and Marle (redhead).
Grandia II features blonde Elena, blue-haired Tio, and redhead Millenia, as playable characters, and brunette Selene as a major non-playable character.
Galerians has Rion (blond), Birdman (brunet) and Rita (redhead). There are also Rainheart (brunet) and Lilia (redhead) as well as Cain (blond). The main character cast basically fulfills the trope quota twice.
The three heroines from 3|Way, a series of erotic SF flash cartoons.
Barbie: Life in the Dreamhouse has three full sets. Barbie (blonde), Nikki (black), and Teresa (auburn) are introduced in the pilot episode, while Summer (strawberry blonde), Raquelle (black), and Midge (ginger) are introduced later. Chelsea also has brunette and redhead friends, with herself filling the role of the blonde.
College Roomies from Hell!!! has a double-set example for both genders. Technically, there are also not one but two sets of brunettes, a pair of brown-brunettes and a pair of black-brunettes.
Elia (blonde), Dores (brunette) and Vandi (redhead) of What Birds Know. In a variation of the standard trope, Dores is the fiery one and Vandi is serious.
The three female housemates in Catena almost fit the trope. Patches is blonde and Treiss is brunette, but Belle's hair is actually pink, not red.
The three female leads of Out There: red-haired Miriam fits the Fiery Redhead trope reasonably well, but also has some Dumb Blonde tendencies; the usually dark-haired Sherry (who sometimes bleaches her hair blonde) can be seen as the Brainy Brunette; and the dark-haired Araceli, despite her occupation (she's an attorney) and hair color, is somewhat of a Shy Blue-Haired Girl.
The two main characters and the first major villain they encounter of Wayfarers Moon.
Questionable Content: one could say this applies to the ladies working at the Coffee of Doom. Dora has black hair, Raven had a blonde streak and Faye's hair colour could qualify as being between the two. Later, after Raven gets Put on a Bus, Penny shows up to fulfill the blonde requirement, though she defies the trope in personality...
The three female leads of LCD: Julianne McIntyre is the blonde, Raven Svoboda is the brunette and Terry Sligh is the redhead.
The major female characters in Arthur, King of Time and Space are Guenevere (redhead), Morgan (brunette) and space/contemporary!Tristam (chestnut). Originally it was Morgan (brunette), Guenevere (redhead) and space/contemporary!Bedivere (blonde), until Bedivere was retconned as male in all the arcs.
Geoff (blonde), Drucilla (brunette) and Pibgorn (redhead). Alternately: Pigorn, Drucilla (black hair) and the hair fairy (brown hair).
El Goonish Shive hasn't included this trope proper for a while, but the first three female protagonists to be introduced in the comic were Sarah (blonde), Grace (brunette) and Nanase (redhead). The next two girls had dyed dark blue hairnote she was naturally blonde (which appeared black) and brunette hair respectively. Nanase's hair became dark as a result of her magic burning out in later arcs and Susan's dyed hair color became permanent as a result of her magic awakening, leaving Sarah as the only blonde in a cast full of dark-haired girls.
In Pacificators, from the main cast alone, there are two brunettes (Daryl and Muneca), a blonde (Larima), a redhead (Cinna) and two with black hair (Bismun and Taffe). That's not even counting the supporting and minor characters...
Rocketboom has this with the hosts of its three YouTube channels: blonde Meme Molly on Rocketboom Daily, brunette Ellie Rountree on Rocketboom Tech, and redheaded Ella Morton on Rocketboom New York City.
In The Spectacular Spider-Man, now that they're all part of the same clique (sort of), there's Gwen Stacy, Mary Jane and Liz Allan, though Gwen, the blonde, is the brainy one and Liz, the brunette, is the cheerleader.
Fireman Sam: Penny (blonde), Elvis (black) and either Sam (red) or Station Officer Steele (white). Sam, Elvis and Penny are notable for actually being the opposite of their hair colour stereotype tropes (Dumb Blonde, Brainy Brunette, Fiery Redhead). Sam (redhead) is very even tempered, Penny (blonde) is very brainy and competent, while Elvis (brunette) is, well...not.
Fin (blonde), Lo (brunette) and Emma (redhead) from Stoked.
All-male example with Broseph, Johnny, and Reef.
Caitlin (blonde), Nikki (naturally black, dyed purple) and Jen (redhead) from Six Teen.
The short-lived Comedy Central animated series Kid Notorious (which starred real-life film director Robert Evans) had one episode in which Evans is posing as a Nazi to expose a fellow filmmaker. While throwing a party at his mansion for a skinhead group, Evans says (in a German Accent) "It's entertainment time! Take your Pick! In all your favorite flavors! Blondes, brunettes, redheads, all with matching collars and cuffs!"
Nara Burns (blonde), Rita Torres (brunette) and Maggie Weston (redhead), the three female leads from Exo Squad.
The three Batwomen in Batman: Mystery of the Batwoman: Kathy (brunette), Rocky (blonde) and Sonia (reddish brown). In a subversion of stereotypical roles, Rocky is a genius metallurge, Kathy is a fighter and Sonia is the stoic leader.
A rare male version can be found in the founding members of the Young Justice team with Aqualad being the Dark-Skinned Blonde, Robin as the brunette and Kid Flash as the redhead.
The cycle continues when they added Superboy (brunette), Miss Martian (redhead) and Artemis (blonde). With the addition of Zatanna (black) the girls of the team become this trope as well.
Season two adds Batgirl (redhead), Wonder Girl (blonde) and Bumblebee (brunette) to the roster.
Stella (blonde), Flora (brunette) and Bloom (redhead) from Winx Club also count. Of the six Winx girls, they're the more popular ones.
An episode of The Simpsons showed that Pattie & Selma are respectively blonde and redhead but turned dark blue because of cigarette ash and smoke. Marge is the brunette. So how'd Marge's hair turn blue? She dyes it. "She's been gray as a mule since she was 17."
Patti (blonde), Connie (brunette, but more blue-violet) and Beebe (redhead) from Doug. However, Patti and Connie swapped their hair stereotypes, as Patti is the brainy one and Connie's more naive. Beebe's still a Fiery Redhead. Funnily enough, Connie was blonde in the show's first season.
Sarah (redhead), James (blond) and Henri (brunet) from Liberty's Kids fall into this trope.
Sharon (blonde), Maria (brunette) and Nina (redhead) on Braceface.
On Gargoyles, the Weird Sisters are a variant — identical except that they have black, golden and white hair. They respectively represent fury, grace and fate, according to Word of God, though act much like Single Minded Triplets in order to bring all three forces into fruition. It also isn't clear what their Grace aspect is truly like, since they never had any episodes when that aspect was "ascendant".
Bionic Six: Meg (Blonde), Madam "O" (Brunette) and Helen (Redhead).
Kenny (blond), Stan (brunet) and Kyle (redhead) in South Park, along with Cartman who has light brown hair. They also follow the traditional stereotypes. Kenny being an overindulgent slut. Kyle being smart but hotheaded at times. Stan being the consistent and levelheaded one.
As Told by Ginger has red haired Ginger, blonde Dodie and brunette Macie. Ginger and Macie are both Brainy Redhead and Brunette respectively while Dodie is both a Fiery and Dumb Blonde.
Recess had an all-male example in the pilot with the three main boys: Mikey (Blonde), Vince (Brunette), T.J. (Redhead). In the series proper, T.J. was given brown hair and another blonde, Gus, was added.
Mighty Max gives another male example. Norman has red hair and is hot blooded and violent. Virgil has brown feathers, essentially making him a non-human version of a brunette, and is more cold and calculating. Max is the only one who defies his sterotype: he's the blonde, but he's not a Dumb Blonde at all, though he can be overly indulgent sometimes.
Kick Buttowski's three love interests are Jackie (brunette), Kendall (blonde), and Scarlet (redhead).
Teen Titans temporarily has blonde Terra, bluish-haired Raven, and redhead Starfire.
Grojband has Kate (blonde), Allie (brunette), and Laney (redhead) and Konnie (blonde), Kim (brunette), and Larry (redhead).
Britain's Prince William (blond), his wife Kate (brunette) and his brother Harry (redhead) have been described as a "power trio" and often appear together at events (most recently as the official ambassadors of the London Olympics).