Violet

Violet was a shade of purple

Violet was a colour, situated on one end of the visible spectrum before indigo and blue. (TV: Sky)

The Eighth Doctor wore a violet waistcoat on occasion. (COMIC: ''Dreadnought

Donna Noble wore a violet top under her gunmetal grey sweater dress. (TV: Turn Left, The Stolen Earth/Journey's End)

wore a violet suit when she and Clara Oswald went to Skaro. (TV: The Magician's Apprentice/The Witch's Familiar)

Raxacoricovarlonpatorians had violet skin. (COMIC: Doctormania)

The Maelstrom was partially violet. (PROSE: Enter Wildthyme)