Beige
From Tardis Wiki, the free Doctor Who reference
Beige was a lighter shade of yellow.
The First Doctor wore a beige tweed waistcoat. (TV: An Unearthly Child, The Daleks, The Dalek Invasion of Earth, The Tenth Planet, The Three Doctors, The Five Doctors, Twice Upon A Time, etc all).
The War Doctor wore a beige scarf (COMIC: The Clockwise War)
Sarah Jane Smith wore a beige shirt when she, Clyde, and Rani met Eve, Samuel Lloyd, and Harry Sowersby. (TV: The Mad Woman in the Attic)
Emily Morris wore a beige walking skirt (TV: Lost in Time)
Herr Drosselmeyr wore a beige coat. (PROSE: Another Clockwork Iris)