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.

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

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

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

Slate roof

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 New York City Subway shuttle bullet, used on three New York City Subway shuttle services .