slate blue

American  

noun

1. a moderate to dark grayish blue.

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Other Word Forms

• slate-blue adjective

Etymology

Origin of slate blue

First recorded in 1790–1800

Example Sentences

The skies did not fully cede to darkness as I watched the annular eclipse in the Hill Country town of Bandera on Saturday, but instead had just a slight slate blue tone.

From New York Times

From their desks, nearly 30 stories off the ground, they watched as the sky transformed from hazy, slate blue in the morning to dirty, dishwater gray at noon.

From New York Times

Key is available in veneered oak or walnut or in powder-coated white, gray, slate blue or brick.

From New York Times

I know from photos that the sheets of slate blue clouds overhead were so thin in places that a peachy sunset could be seen beyond them, like light passing through stained glass.

From New York Times

Previous Dragonfly units have come in really gorgeous Dragonfly Blue and sophisticated matte black shades, but this model doesn’t offer that — Natural Silver and darker Slate Blue are the options.

From The Verge