spectral colour vs chromatic colour

spectral colour and chromatic colour both are nouns.

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

As nouns, spectral colour and chromatic colour are synonyms defined as:

Other synonyms of spectral colour include chromatic color, spectral color.

spectral colour (noun)	chromatic colour (noun)
a color that has hue	a color that has hue