ultramarine ash


Definition of ultramarine ash

1 : a delicate bluish gray pigment obtained as a residuum from lapis lazuli after the extraction of ultramarine and used by the old masters as a middle or neutral tint for flesh, skies, and draperies
2 : a variable color averaging from blue ultramarine ash to gray ultramarine ash

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History and Etymology for ultramarine ash

ultramarine entry 1

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