Dark black.
Dark Pink
Dark brown
shade or a dark spot
hauntingly beautiful
longshot, dark horse
An antonym is a word that means the OPPOSITE of another word. The word that means the opposite of light is dark.
Dark chocolate
stout
Another word for dark poetry or the telling of a dark story could be "macabre" or "gloomy."
gloomydullmoral blindnessdeepness of shade or colourobscurityintellectualcalamity
Tom Powell's D.O.B