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Related to slate-black: blank slate

slate black

A purplish black.

slate′-black′ adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.slate-black - of a black tinged with slate-grey
achromatic, neutral - having no hue; "neutral colors like black or white"
References in periodicals archive ?
Stage right, a small, slate-black upright piano, its back to the audience.
You could have a bit of fun by placing a carpet of black Ophiogon nigrescens in front of it and possibly a few plants of slate-black and white hellebores.