WordNet sense 1 (a deep and vivid red color):

ruby, deep red

WordNet sense 2 ((especially of the face) reddened or suffused with or as if with blood from emotion or exertion):

flushed, red, reddened, red-faced

WordNet sense 3 (having color or a certain color; sometimes used in combination):

colored, colorful

WordNet sense 4 (of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies):

carmine, cerise, cherry, reddish, ruddy, scarlet, blood-red, ruby-red, cherry-red

WordNet sense 5 (being or having or characterized by hue):

chromatic

WordNet sense 6 (characterized by violence or bloodshed):

violent

WordNet sense 7 (having or covered with or accompanied by blood):

bloody

WordNet sense 8 (turn red, as if in embarrassment or shame):

blush, flush, redden