Sienna

Sienna
This article is about the clay used for pigments. For the Italian city, see Siena. For other uses, see Sienna (disambiguation).
Sienna
About these coordinates

— Colour coordinates —
Hex triplet #882D17
RGBB (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 most famous 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.

Contents

Variants

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.[2] 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.

Many of these deposits date back to the Precambrian, and are pointed to as evidence of the Snowball Earth hypothesis.

Burnt sienna

Burnt sienna

Burnt sienna is an iron oxide pigment: a warm mid brown colour. Chemically, burnt sienna is formed by burning raw sienna (Terra di Siena Naturale).

Dark sienna

Dark Sienna
About these coordinates

— Colour coordinates —
Hex triplet #3c1414
RGBB (r, g, b) (60, 20, 20)
HSV (h, s, v) (0°, 67%, 24%)
Source ISCC-NBS
B: Normalized to [0–255] (byte)

This infobox shows the color Dark Sienna

See also

References

  1. ^ web.forret.com Color Conversion Tool set to hex code of color #882D17 (Sienna):
  2. ^ Wilcox, Michael (2002). Blue and yellow don't make green. School of Color. pp. 172, 161. ISBN 0-967-96287-0. http://books.google.com/books?id=6Z3bAXEM_xwC&pg=PA161&dq=produce+%22burnt+sienna%22+roast&num=100#v=onepage&q=sienna&f=false. Retrieved October 19, 2009. 
v · d · e
Shades of brown
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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Look at other dictionaries:

  • Sienna — bezeichnet: Toyota Sienna, ein in den USA produziertes Automodell Sienna ist der Vorname folgender Personen: Sienna Guillory (* 1975), britisch US amerikanische Schauspielerin Sienna Miller (* 1981), britisch US amerikanische Schauspielerin… …   Deutsch Wikipedia

  • Sienna — Si*en na, n. [It. terra di Siena, fr. Siena in Italy.] (Chem.) Clay that is colored red or brown by the oxides of iron or manganese, and used as a pigment. It is used either in the raw state or burnt. [1913 Webster] {Burnt sienna}, sienna made of …   The Collaborative International Dictionary of English

  • sienna — ► NOUN ▪ a kind of earth used as a pigment in painting, normally yellowish brown (raw sienna) or deep reddish brown when roasted (burnt sienna). ORIGIN from Italian terra di Sienna earth of Siena (an Italian city) …   English terms dictionary

  • sienna — the pigment and its colour of yellowish brown (raw sienna) or reddish brown (burnt sienna) is spelt with two ns despite being derived from the name of Siena in northern Italy …   Modern English usage

  • sienna — 1760, from It. terra di Sienna earth of Siena, city in central Italy, where the coloring material was first produced. The city name probably is from Senones, the name of a Gaulish people who settled there in ancient times …   Etymology dictionary

  • sienna — [sē en′ə] n. [It terra di Siena, lit., earth of SIENA, where first obtained] 1. an earth pigment containing iron and manganese oxides, yellowish brown in the natural state and reddish brown when burnt: cf. BURNT SIENNA 2. either of these colors …   English World dictionary

  • sienna — n. 1 a kind of ferruginous earth used as a pigment in paint. 2 its colour of yellowish brown (raw sienna) or reddish brown (burnt sienna). Etymology: It. (terra di) Sienna (earth of) Siena in Tuscany * * * Sienna see Siena …   Useful english dictionary

  • sienna — noun a kind of ferruginous earth used as a pigment in painting, normally yellowish brown in colour (raw sienna) or deep reddish brown when roasted (burnt sienna). Origin C18: from Ital. (terra di) Sienna (earth of) Siena …   English new terms dictionary

  • sienna — /see en euh/, n. 1. a ferruginous earth used as a yellowish brown pigment (raw sienna) or, after roasting in a furnace, as a reddish brown pigment (burnt sienna). 2. the color of such a pigment. [1750 60; < It (terra di) Sien(n)a (earth of)… …   Universalium

  • sienna — /siˈɛnə/ (say see enuh) noun 1. a ferruginous earth used as a yellowish brown pigment (raw sienna) or, after roasting in a furnace, as a reddish brown pigment (burnt sienna). 2. the colour of such a pigment. {shortened form of Italian terra di… …  

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