Umber | |
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Hex triplet | #635147 |
sRGBB (r, g, b) | (99, 81, 71) |
HSV (h, s, v) | (21°, 28%, 39%) |
CIELChuv (L, C, h) | (36, 15, 39°) |
Source | ColorHexa[1] |
B: Normalized to [0–255] (byte) |
Umber is a natural earth pigment consisting of iron oxide and manganese oxide; it has a brownish color that can vary among shades of yellow, red, and green.[3]: 39 Umber is considered one of the oldest pigments known to humans, first seen in Ajanta Caves in 200 BC – 600 AD.[4]: 378 Umber's advantages are its highly versatile color, warm tone, and quick drying abilities.[5]: 148–49 While some sources indicate that umber's name comes from its geographic origin in Umbria, other scholars suggest that it derives from the Latin word umbra, which means "shadow".[6]: 250 The belief that its name derives from the word for shadow is fitting, as the color helps create shadows.[6]: 250 The color is primarily produced in Cyprus.[6]: 250 Umber is typically mined from open pits or underground mines and ground into a fine powder that is washed to remove impurities.[7] In the 20th century, the rise of synthetic dyes decreased the demand for natural pigments such as umber.[citation needed]
Helwig-2007
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