Slate gray

This box shows the color slate gray.

Slate roof

Slate gray is a gray color with a little bit of azure blue in it. It is the usual color of the material slate.

The first recorded use of slate gray as a color name in English was in 1705.^[1]

Tones of slate gray color comparison chart

Name	HEX Code	Red	Green	Blue	Hue	Sat	Lum
Light Slate Gray (web color)	#778899	119	136	153	210°	14%	53%
Slate gray (web color)	#708090	112	128	144	210°	13%	50%
Dark Slate Gray (web color)	#2F4F4F	47	79	79	180°	25%	25%

Mid-1980s supercomputer Thinking Machines CM-1 (the Connection Machine) at the Computer History Museum in Mountain View, California. One of the face plates has been partially removed to show the circuit boards inside.
Roadrunner supercomputer HiRes
The New York City Subway shuttle bullet, used on three New York City Subway shuttle services.

↑ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 204; Color Sample of Slate Gray: Page 51 Plate 14 Color Sample A2