Grey or gray is an achromatic or neutral color.
Complementary colors are defined to mix to grey, either additively or subtractively, and many color models place complements opposite each other in a color wheel. To produce grey in RGB displays, the R, G, and B primary light sources are combined in proportions equal to that of the white point. In four-color printing, greys are produced either by the black channel, or by an approximately equal combination of CMY primaries. Images which consist wholly of neutral colors are called monochrome, black-and-white or greyscale.
The first recorded use of grey as a color name in the English language was in AD 700. Grey is the British, Canadian, Australian, Irish, New Zealand and South African spelling, although gray remained in common usage in the UK until the second half of the 20th century. Gray is the preferred American spelling, although grey is an accepted variant. Gray became the preferred spelling in American English around 1825.
Famous quotes containing the word grey:
“And Space with gaunt grey eyes and her brother Time
Wheeling and whispering come,”
—James Elroy Flecker (18841919)
“Towns are ... excrescences, grey fluxions, where men, hurrying to find one another, have lost themselves.”
—E.M. (Edward Morgan)
“As our boys and men are all expecting to be Presidents, so our girls and women must all hold themselves in readiness to preside in the White House; and in no city in the world can honest industry be more at a discount than in this capital of the government of the people.”
—Jane Grey Swisshelm (18151884)