orange red vs scarlet

orange red and scarlet both are nouns.

Word	Noun	Adjective	Verb	Adverb
orange red	Yes	No	No	No
scarlet	Yes	Yes	No	No

As nouns, orange red and scarlet are synonyms defined as:

orange red and scarlet: a variable color that is vivid red but sometimes with an orange tinge

Other synonyms of orange red include vermilion.

orange red (noun)	scarlet (noun)
a variable color that is vivid red but sometimes with an orange tinge	a variable color that is vivid red but sometimes with an orange tinge

orange red (adjective)	scarlet (adjective)
	of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies