Ultramarine

Ultramarine was a shade of blue. (PROSE: Time Traveller's Diary ^[+]Loading...["Time Traveller's Diary (novel)"])

In stained glass depictions on Avalon in 2991 the sea was represented by ultramarine glass. (PROSE: The Sorcerer's Apprentice ^[+]Loading...["The Sorcerer's Apprentice (novel)"])

One of the weapons testing rooms in the Cybermen's tomb on Telos encountered by Jamie McCrimmon and Peter Haydon in the 26th century which flashed several colours at them including; crimson, rose, scarlet, vermilion, orange, yellow, green, blue, royal blue, ultramarine, violet and purple. (PROSE: Doctor Who and the Tomb of the Cybermen ^[+]Loading...["Doctor Who and the Tomb of the Cybermen (novelisation)"])

Cultural

Various species with ultramarine skin colour, such as Balhoonians, Crespallions, Stenza and Hooloovoo, celebrated Blue Monday on 24 January each year. (PROSE: Time Traveller's Diary ^[+]Loading...["Time Traveller's Diary (novel)"])