Crossword Genius

The colour of blood? (5,4)

Ross

I believe the answer is:

royal blue

I'm a little stuck... Click here to teach me more about this clue!

'the colour' is the definition.
(royal blue is a kind of colour)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for royal blue that I've seen before include "Bally euro (anag.)" , "A shade Conservative" , "(Regal?) colour" , "Queen's shade?" , "Deep rich shade of colour" .)

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