Deep violet-blue colour (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
indigo
(Other definitions for indigo that I've seen before include "Blue-violet colour" , "I of ROYGBIV" , "Spectral colour" , "Blue-purple colour in spectrum" , "Violet-blue dye" .)
I believe the answer is:
indigo
(Other definitions for indigo that I've seen before include "Blue-violet colour" , "I of ROYGBIV" , "Spectral colour" , "Blue-purple colour in spectrum" , "Violet-blue dye" .)