dark-brown vs chocolate-brown

dark-brown and chocolate-brown both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dark-brown	No	Yes	No	No
chocolate-brown	No	Yes	No	No

As adjectives, dark-brown and chocolate-brown are synonyms defined as:

dark-brown and chocolate-brown: of a color similar to that of wood or earth

Other synonyms of dark-brown include brown, brownish.

dark-brown (adjective)	chocolate-brown (adjective)
of a color similar to that of wood or earth	of a color similar to that of wood or earth