spectral color vs chromatic colour

spectral color and chromatic colour both are nouns.

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

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

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

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