Lavender was a light shade of purple named after a certain flower.
Tegan Jovanka wore a lavender shirt. (TV: Castrovalva, Kinda, Earthshock)
Josie Day wore a lavender blouse under her steel blue tailcoat. (COMIC: A Matter of Life and Death, The Lost Dimension)
Verity Newman wore a lavender blouse under her charcoal waistcoat when she met the Tenth Doctor. (TV: The End of Time)
In the mid 2000s, Torchwood Three found an emotional amplifier which was deep-lavender in colour. (PROSE: Slow Decay)