platinum blond vs platinum blonde

platinum blond and platinum blonde both are nouns.

Word	Noun	Adjective	Verb	Adverb
platinum blond	Yes	No	No	No
platinum blonde	Yes	No	No	No

As nouns, platinum blond and platinum blonde are synonyms defined as:

platinum blond and platinum blonde: a blond whose hair is a pale silvery (often artificially colored) blond

platinum blond (noun)	platinum blonde (noun)
a blond whose hair is a pale silvery (often artificially colored) blond	a blond whose hair is a pale silvery (often artificially colored) blond