Wiktionary
a. Of a purplish blue colour. n. A purplish blue colour.
Usage examples of "gentian blue".
I suggest that if the bandage were removed, his temple would be unblemished, except, perhaps, for an artistic touch of gentian blue.
Eastward, the moon rose into a swath of gentian blue, like a teardrop on a blanket.
Elderly people nowadays weren't like elderly people thenthey had that worried harried look of domestic anxieties with which they are too tired to cope, or they rushed around to committees and tried to appear bustling and competent, or they dyed their hair gentian blue, or wore wigs, and their hands were not the hands she remembered, tapering, delicate handsthey were harsh from washing up and detergents.
Elderly people nowadays weren't like elderly people then--they had that worried harried look of domestic anxieties with which they are too tired to cope, or they rushed around to committees and tried to appear bustling and competent, or they dyed their hair gentian blue, or wore wigs, and their hands were not the hands she remembered, tapering, delicate hands--they were harsh from washing up and detergents.