Any of several violets; especially Viola cucullata of eastern North America.
Origin
Mid 17th century (in an earlier sense). From blue + violet.
blue-violet2
/bluːˈvʌɪəlɪt/
adjective
Of a colour intermediate between blue and violet.
noun
A colour intermediate between blue and violet; a pigment of this shade.
Origin
Late Middle English; earliest use found in The Wycliffite Bible (early version). From blue + violet. Originally translating classical Latin hyacinthus, in the post-classical Latin sense ‘violet blue, blue-dyed cloth’.