Bluish gray

• Having a dull blue color
• Of a grayish hue
• Colored a bluish gray
• Made of shale
• Dullish gray
• Grayish in color
• Like an overcast sky

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Slaty \Slat"y\, a. [From Slate .] Resembling slate; having the nature, appearance, or properties, of slate; composed of thin parallel plates, capable of being separated by splitting; as, a slaty color or texture. Slaty cleavage (Min.), cleavage, as of rocks, ...

WordNet Word definitions in WordNet
adj. resembling or containing slate [syn: slatey ] of the color of slate or granite; "the slaty sky of dawn" [syn: slate-gray , slatey , stone-gray ] [also: slatiest , slatier ]

Wiktionary Word definitions in Wiktionary
a. Resembling the mineral slate.