blue-white vs bluish-white

blue-white and bluish-white both are adjectives.

Word	Noun	Adjective	Verb	Adverb
blue-white	No	Yes	No	No
bluish-white	No	Yes	No	No

As adjectives, blue-white and bluish-white are synonyms defined as:

Other synonyms of blue-white include cool-white.

blue-white (adjective)	bluish-white (adjective)
of white tinged with blue	of white tinged with blue