These can be any shade from dark indigo through to pale blue or pure white.
The Sun (2016)
There are hints of this in the deep pinks, rich blues and indigo tones of paints and tiles used in the bathrooms on each floor.
Times, Sunday Times (2012)
Or, to be more exact, the particular shade of indigo blue paint applied to the wall pictured here.
Times, Sunday Times (2013)
It is dusk now; only the street lights pick out the low hills of the Cotswolds against an indigo sky.
Times, Sunday Times (2015)
Word lists with
indigo
blue, purple
In other languages
indigo
British English: indigo ADJECTIVE
Something that is indigo is dark purplish-blue in colour.
...the stars in the indigo sky.
American English: indigo
Brazilian Portuguese: cor de anil
Chinese: 靛青的
European Spanish: (de color) añil
French: indigo
German: indigofarben
Italian: indaco
Japanese: 藍色の
Korean: 남색
European Portuguese: cor de anil
Latin American Spanish: (de color) añil
All related terms of 'indigo'
indigo blue
→ indigotin
wild indigo
any of several North American leguminous plants of the genus Baptisia , esp B . tinctoria, which has yellow flowers and three-lobed leaves
false indigo
any of several North American shrubs belonging to the genus Amorpha , of the legume family, esp. A. fruticosa , having compound leaves with pinnate leaflets and long, dense clusters of purplish flowers
indigo snake
a dark-blue nonvenomous North American colubrid snake , Drymarchon corais couperi
indigo bunting
a North American bunting , Passerina cyanea, the male of which is bright blue and the female brown