Slate gray

Slate gray is a gray color with a slight azure tinge that is a representation of the average color of the material slate. As a tertiary color, slate is an equal mix of purple and green pigments.[2][3]

Slate gray
 
    Color coordinates
Hex triplet#708090
HSV       (h, s, v)(210°, 22%, 56%)
sRGBB  (r, g, b)(112, 128, 144)
SourceX11
ISCC–NBS descriptorGrayish blue
B: Normalized to [0–255] (byte)
H: Normalized to [0–100] (hundred)
Slate roof
Slate as a tertiary color
  purple
  slate[1]
  green

Slaty, referring to this color, is often used to describe birds.

The first recorded use of slate gray as a color name in English was in 1705.[4]

Variations

Light slate gray
Light slate gray
 
    Color coordinates
Hex triplet#778899
HSV       (h, s, v)(210°, 22%, 60%)
sRGBB  (r, g, b)(119, 136, 153)
SourceX11
ISCC–NBS descriptorGrayish blue
B: Normalized to [0–255] (byte)
H: Normalized to [0–100] (hundred)

Displayed at right is the web color light slate gray.[5]

Dark slate gray
Dark slate gray
 
    Color coordinates
Hex triplet#2F4F4F
HSV       (h, s, v)(180°, 41%, 31%)
sRGBB  (r, g, b)(47, 79, 79)
SourceX11
ISCC–NBS descriptorDark bluish green
B: Normalized to [0–255] (byte)
H: Normalized to [0–100] (hundred)

Displayed at right is the web color dark slate gray.[6]

In human culture

Computers

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.
IBM Roadrunner supercomputer—the fastest supercomputer in the world in May 2008, it could operate at a speed of 1.026 petaflops
  • The exterior shells of supercomputers are often colored various shades of slate gray.
  • The iPhone 5 and the iPad Mini comes in a Dark slate gray colored aluminum body contrasted with black.
  • Western Electric in their 25-pair (and multiples) cable for pairs 5-10-15-20-25 used the term SLATE for the color instead of gray.

Transportation

The New York City Subway shuttle bullet, used on three New York City Subway shuttle services.
  • The S New York City Subway service bullet, used in three out of the system's 28 services, is colored slate gray.

See also
  • List of colors

References
  1. RGB approximations of RYB tertiary colors, using cubic interpolation."Archived copy". Archived from the original on 28 June 2013. Retrieved 29 December 2012.CS1 maint: archived copy as title (link) The colors displayed here are substantially paler than the true colors a mixture of paints would produce.
  2. William J. Miskella, 1928, Practical Color Simplified: A Handbook on Lacquering, Enameling, Coloring And Painting, pp.
  3. John Lemos, 1920, "Color Charts for the School Room", in School Arts, vol. 19, pp. 580–584.
  4. 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.
  5. "Light slate gray". ColorHexa.com.
  6. "Dark slate gray". ColorHexa.com.


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