Different hue, I grant, is more blue (9)
I believe the answer is:
naughtier
'more blue' is the definition.
('naughty' can be a synonym of 'blue')
'different hue i grant' is the wordplay.
'different' indicates anagramming the letters.
'hue'+'i'+'grant'='hueigrant'
'hueigrant' is an anagram of 'NAUGHTIER'.
'is' is the link.
(Other definitions for naughtier that I've seen before include "Less well behaved" , "more unruly" , "More mischievous" , "More badly behaved" , "Worse" .)