Beige

Beige was a light form of yellow and white with a little tint of brown.

The War Doctor wore a beige scarf when he, Fey and the Sisterhood of Karn fought the Daleks and the Morlontoa of the Seventh Sky on the Dorian Nexus. (COMIC: The Clockwise War)

The First Doctor wore a beige tweed waistcoat. (TV: An Unearthly Child, The Daleks, et al.)

The Seventh Doctor wore a beige pullover adorned with crimson question marks and turquoise zigzag patterns. (TV: Time and the Rani)

Sarah Jane Smith occasionally wore beige shirts. (TV: The Last Sontaran, The Mad Woman in the Attic)

Yasmin Khan wore a beige waistcoat with her ivory shirt and her bottle green walking suit. (TV: Survivors of the Flux|The Vanquishers)

Barbara Wright often wore a beige turtle-neck jumper. (TV: The Keys of Marinus, The Web Planet, The Space Museum, The Chase, etc.)

Emily Morris wore a beige walking skirt. (TV: Lost in Time)

Jo Grant wore a beige safari jacket when she and the Third Doctor met Salamander posing as the Second Doctor. (COMIC: The Heralds of Destruction)

Petronella Osgood wore a beige jumper when she and the Twelfth Doctor work to stop the Zygon rebels Truth or Consequences. (TV: The Zygon Inversion|The Zygon Inversion) She also wore a beige copy of the Sixth Doctor's coat with a cat pin. (TV: The Lost Dimension)

The Fifth Doctor wore a beige frock coat with a scarlet trim. (TV: Castrovalva-Warriors of the Deep)

Romana wore beige jodhpurs. (TV: The Horns of Nimon; COMIC: Time Lady of Means) She also wore a beige frock coat when they met Great Vampires. (TV: State of Decay)

Susan Foreman wore a beige trenchcoat during her adventure on the Death Zone. (TV: The Five Doctors)

Cass Fermazzi wore a beige coverall. (AUDIO: Meanwhile, Elsewhere-Previously, Next Time; TV: The Night of the Doctor)

Oscar Botcherby wore a beige safari jacket when he and Anita met the Sixth Doctor, Peri Brown, and Jamie McCrimmon after seeing Sontaran Group Marshal Stike's scoutship fly over. (TV: The Two Doctors)

Amy Pond wore a beige leather jacket. (TV: The Girl who Waited)

Allison Williams wore a beige cardigan when she helped the Seventh Doctor during the Hand of Omega Incident. (TV: Remembrance of the Daleks)

Eldane, the Silurian leader, wore a black robe with some beige and crimson. (TV: Cold Blood)

The Curator, a future version of the Doctor, wore a beige and maroon tattersall shirt when he looked similar to the Fourth Doctor. (TV: The Day of the Doctor)

wore a dark beige tweed waistcoat when he worked with and  to help. (AUDIO: Day of the Master)

The commanding Eternals of the Shadow including Striker and Marriner wear beige trousers. (TV: Enlightenment)

The Dream Lord wore a beige waistcoat with his tweed suit when he taunts the Eleventh Doctor, Amy Pond, and Rory Williams during the beginning of the Eknodine assault. (TV: Amy's Choice)

Captain Cook, an intergalactic explorer, wore an ascot tie of burgundy and beige paisley. (TV: The Greatest Show in the Galaxy)

The Pied Piper wore beige trousers when posing as Mr. Spellman, director of Spellman's Magical Museum of the Circus. (TV: The Day of the Clown)

Herr Drosselmeyr wore a beige coat. (PROSE: Another Clockwork Iris)

Behind the scenes
In NOTVALID: Daleks versus the Martians and Daleks' Invasion Earth 2150 A.D., Louise wears a beige blouse.