Violet blue (6)
I believe the answer is:
indigo
(Other definitions for indigo that I've seen before include "Blue-purple colour in spectrum" , "Deep violet-blue colour" , "Spectral colour" , "type of dye" , "Blue dyestuff" .)
I believe the answer is:
indigo
(Other definitions for indigo that I've seen before include "Blue-purple colour in spectrum" , "Deep violet-blue colour" , "Spectral colour" , "type of dye" , "Blue dyestuff" .)