Sienna
| Sienna | |
|---|---|
 Colour coordinates |
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| Hex triplet | #882D17 |
| sRGBB (r, g, b) | (136, 45, 23) |
| HSV (h, s, v) | (12°, 83%, 53[1]%) |
| Source | ISCC-NBS |
| B: Normalized to [0–255] (byte) |
|
Sienna is a form of limonite clay used in the production of oil paint pigments. Its yellow-brown colour comes from ferric oxides contained within. As a natural pigment, it (along with its chemical cousins ochre and umber) was one of the first pigments to be used by humans, and is found in many cave paintings. When roasted, the pigment becomes a rich reddish-brown, known as burnt sienna.[2]
The first recorded use of sienna as a colour name in English was in 1760.[3]
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Variations of sienna [edit]
Sienna refers to a wide range of colours, from a dark reddish brown (burnt sienna) to a medium yellowish brown (raw sienna). The colour meant by sienna varies according to the colour list and the country.
Sienna, in and of itself, is sometimes referred to as "raw sienna", in order to differentiate it from "burnt sienna", which is a more common pigment than the raw form. The difference is in the process applied to create burnt sienna, which is raw sienna heated to remove the water from the clay and give it a warm reddish-brown colour.[4] The name of this pigment was classically referred to by the French term, "terre de Sienne brulée".
The name derives from the most notable Renaissance location for the earth, Siena, Italy, and is short for terra di Siena, "earth of Siena". The mines used to produce this sienna petered out in the 1940s. Much of today's sienna production is still carried out in the Italian islands of Sardinia and Sicily, while other major deposits are found in the Appalachian Mountains, where it often goes hand-in-hand with the region's iron deposits
Raw sienna [edit]
| Terra di Siena naturale, or raw Sienna (Italian) | |
|---|---|
| Colour coordinates |
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| Hex triplet | #531B00 |
| sRGBB (r, g, b) | (83, 27, 0) |
| CMYKH (c, m, y, k) | (0, 68, 100, 68) |
| HSV (h, s, v) | (20°, 100%, 33%) |
| Source | Catalogo colori ad olio Ferrario |
| B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred) |
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| Terre de Sienne (French) | |
|---|---|
| Colour coordinates |
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| Hex triplet | #8A3324 |
| sRGBB (r, g, b) | (138, 51, 46) |
| CMYKH (c, m, y, k) | (0, 63, 74, {{{k}}}) |
| Source | [Unsourced] |
| B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred) |
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Raw sienna is a yellowish brown natural earth pigment.[5]
Burnt sienna [edit]
| Burnt sienna pigment | |
|---|---|
| Colour coordinates |
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| Hex triplet | #E97451 |
| sRGBB (r, g, b) | (233, 116, 81) |
| HSV (h, s, v) | (14°, 65%, 91%) |
| Source | [1]/Maerz and Paul[6] |
| B: Normalized to [0–255] (byte) |
|
Burnt sienna is an iron oxide pigment: and a rich reddish brown colour.[7] Chemically, burnt sienna is formed by burning raw sienna (Terra di Siena Naturale).
| Terra di Siena bruciata, or burnt siena (Italian) | |
|---|---|
| Colour coordinates |
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| Hex triplet | #863410 |
| sRGBB (r, g, b) | (134, 52, 16) |
| CMYKH (c, m, y, k) | (0, 61, 88, 48) |
| HSV (h, s, v) | (18°, 88%, 53%) |
| Source | Catalogo colori ad olio Ferrario |
| B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred) |
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The first recorded use of burnt sienna as a colour name in English was in 1853.[8]
Dark sienna [edit]
| Dark Sienna | |
|---|---|
| Colour coordinates |
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| Hex triplet | #3c1414 |
| sRGBB (r, g, b) | (60, 20, 20) |
| HSV (h, s, v) | (0°, 67%, 24%) |
| Source | [9] |
| B: Normalized to [0–255] (byte) |
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This infobox shows the colour dark sienna.
See also [edit]
References [edit]
- ^ web.forret.com Color Conversion Tool set to hex code of color #882D17 (Sienna)
- ^ Shorter Oxford English Dictionary, 5th Edition (2002)
- ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 204; Color Sample of Sienna: Page 37 Plate 7 Color Sample E12
- ^ Wilcox, Michael (2002). Blue and yellow don't make green. School of Color. pp. 172, 161. ISBN 0-9679628-7-0. Retrieved October 19, 2009.
- ^ Shorter Oxford English Dictionary, 5th edition (2002)
- ^ The colour displayed in the colour box above matches the colour called burnt sienna in the 1930 book by Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill; the color burnt sienna is displayed on page 33, Plate 5, Color Sample F12.
- ^ Shorter Oxford English Dictionary, 5th edition, (2002)
- ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 204; Color Sample of Sienna: Page 33 Plate 5 Color Sample F12
- ^ Foster, John C.; Texas Precancel Club (1 April 2006). "THE MOTHER OF ALL HTML COLOR CHARTS RGB order page #3C". Retrieved August 16, 2012.
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