Cornflower (colour)
From Tardis Wiki, the free Doctor Who reference
Cornflower was a light shade of blue named after a certain flower.
The Tenth Doctor wore a wood brown tie with semi-random floral design of cornflower blue flowers and bronze foliage when he helped to foil the 1562/2013 Zygon Invasion of Earth and when he revisited the Fall of Gallifrey.. (TV: The Day of the Doctor)
The Twelfth Doctor wore a single-breasted frock coat of raven black velvet with a cornflower lining. (TV: The Pilot, Thin Ice)