indigo
in-di-go
noun
A deep purplish-blue colour, or the dye obtained from plants or chemicals.
"She chose indigo for the accent wall."
adjective
Having a deep purplish-blue colour.
"He wore an indigo shirt to the party."
Thesaurus
Synonyms: indigotin, anil, indigo plant, Indigofera tinctoria, coloured, colorful, colourful, colored