Umber
Umber is a natural brown clay pigment that contains iron and manganese oxides. The color becomes more intense when calcined (heated), and the resulting pigment is called burnt umber. Its name derives from the Latin word umbra (shadow) and was originally extracted in Umbria, a mountainous region of central Italy,[1] but it is found in many parts of the world. Some of the finest umber comes from Cyprus. It has been used as a pigment since prehistoric times.
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[edit] Raw umber
| Raw Umber | ||
|---|---|---|
— Color coordinates — |
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| Hex triplet | #826644 | |
| RGBB | (r, g, b) | (130, 102, 68) |
| HSV | (h, s, v) | (33°, 48%, 51[2]%) |
| Source | ISCC NBS | |
| B: Normalized to [0–255] (byte) |
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Displayed at the right is the color raw umber.
This is the color of the raw natural clay earth pigment.
The source of this color is: ISCC-NBS Dictionary of Color Names (1955)--Color Sample of Raw Umber (color sample #77).
[edit] Umber
| Umber | ||
|---|---|---|
|
— Color coordinates — |
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| Hex triplet | #635147 | |
| RGBB | (r, g, b) | (99, 81, 71) |
| HSV | (h, s, v) | (21°, 28%, 39[3]%) |
| Source | ISCC NBS | |
| B: Normalized to [0–255] (byte) |
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Displayed at the right is the color umber.
This is the color achieved when the raw unheated clay earth pigment is processed into refined pigment.
The source of this color is: ISCC-NBS Dictionary of Color Names (1955)--Color Sample of Umber (color sample #61).
[edit] Burnt umber
| Burnt umber | ||
|---|---|---|
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— Color coordinates — |
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| Hex triplet | #8A3324 | |
| RGBB | (r, g, b) | (138, 51, 36) |
| HSV | (h, s, v) | (9°, 74%, 54%) |
| Source | Xona.com Color List | |
| B: Normalized to [0–255] (byte) |
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Burnt umber is both a pigment and a color. This medium brown pigment is made by heating umber, a dark brown clay containing oxides of iron and manganese. It is used for oil and water color paint.
The first recorded use of burnt umber as a color name in English was in 1650.[4]
[edit] See also
[edit] References
- ^ Blick Art Materials, 00501-8054 — Burnt Umber
- ^ web.forret.com Color Conversion Tool set to hex code of color #826644 (Raw Umber):
- ^ web.forret.com Color Conversion Tool set to hex code of color #635147 (Umber):
- ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 191; Color Sample of Burnt Umber: Page 53 Plate 15 Color Sample A12
[edit] External links
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| Auburn | Beaver | Beige | Bistre | Bole | Bronze | Brown | Buff | Burgundy | Burnt sienna |
| Burnt umber | Camel | Chamoisee | Chestnut | Chocolate | Citrine | Coffee | Copper | Cordovan | Desert sand |
| Earth yellow | Ecru | Fallow | Fawn | Field drab | Fulvous | Isabelline | Khaki | Lion | Liver |
| Mahogany | Maroon | Ochre | Raw umber | Redwood | Rufous | Russet | Rust | Sand | Sandy brown |
| Seal brown | Sepia | Sienna | Sinopia | Tan | Taupe | Tawny | Umber | Wenge | Wheat |
| The samples shown above are only indicative. | |||||||||
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