blueness vs chromatic colour

blueness and chromatic colour both are nouns.

Word	Noun	Adjective	Verb	Adverb
blueness	Yes	No	No	No
chromatic colour	Yes	No	No	No

As nouns, chromatic colour is a hypernym of blueness; that is, chromatic colour is a word with a broader meaning than blueness:

blueness: blue color or pigment; resembling the color of the clear sky in the daytime
chromatic colour: a color that has hue

Other hypernyms of blueness include chromatic color, spectral color, spectral colour.

blueness (noun)	chromatic colour (noun)
blue color or pigment; resembling the color of the clear sky in the daytime	a color that has hue