(as) black as night

(as) black as night

Very dark or black in color. A: "I can't believe that Grandma's hair used to be black as night." B: "Well, sure—you've only ever known her with gray hair."
See also: black, night
Farlex Dictionary of Idioms.

black as night

Also, black as coal or pitch . Totally black; also, very dark. For example, The well was black as night, or She had eyes that were black as coal. These similes have survived while others-black as ink, a raven, thunder, hell, the devil, my hat, the minister's coat, the ace of spades-are seldom if ever heard today. Of the current objects of comparison, pitch may be the oldest, so used in Homer's Iliad (c. 850 b.c.), and coal is mentioned in a Saxon manuscript from a.d. 1000. John Milton used black as night in Paradise Lost (1667).
See also: black, night
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • black as night
  • black as pitch
  • (as) black as pitch
  • (as) black as the minister's coat
  • minister
  • (as) black as ink
  • ink
  • (as) black as a stack of black cats
  • pitch black
  • black gold