ruby-red vs ruddy

ruby-red and ruddy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ruby-red	No	Yes	No	No
ruddy	No	Yes	No	No

As adjectives, ruby-red and ruddy are synonyms defined as:

ruby-red and ruddy: of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies

Other synonyms of ruby-red include blood-red, carmine, cerise, cherry-red, cherry, crimson, red, reddish, ruby, scarlet.

ruby-red (adjective)	ruddy (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	of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies
	inclined to a healthy reddish color often associated with outdoor life