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Like the other earth colors, such as yellow ochre and umber, sienna is a clay which is partially composed of iron oxides.In the case of sienna, the most prevalent iron oxides are limonite (which in its natural state has a yellowish color), and goethite.
In 1997, Crayola released a 16-pack of Color Mix-Up Crayons, each of which contains a solid color with flecks of two other colors in it. [19] Colors in the chart below are approximated. The hex RGB values are in the order of the predominant color and then the flecks.
Same color as "Flesh" (1949–1956, 1958–1962), "Pink Beige" (1956–1958), and "Peach" (1962–present). Burnt Umber #8A3324 Discontinued by 1949 Raw Umber #826644 One of the 8 colors "Retired" in 1990 Raw Sienna #D68A59 Discontinued by 1910. Gold #A57C00 Metallic; swatch represents nominal hue only. Available only in bulk after 1915. Silver
Various shades of the color brown. This category is for all varieties, ... Burgundy (color) Burnt sienna; C. Camel (color) Chestnut (color) Chocolate (color) Cinereous;
Ochre is a family of earth pigments, which includes yellow ochre, red ochre, purple ochre, sienna, and umber. The major ingredient of all the ochres is iron(III) oxide-hydroxide, known as limonite, which gives them a yellow colour. A range of other minerals may also be included in the mixture: [5]: 134 Yellow ochre (Goldochre) pigment
Raw sienna and burnt sienna are also clay pigments rich in iron oxide, which were mined during the Renaissance around the city of Siena in Tuscany. Sienna contains less than five percent manganese. The natural sienna earth is a dark yellow ochre color; when roasted it becomes a rich reddish brown called burnt sienna. [20]
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At right is displayed color kobe. The color kobe is a dark tone of Indian red, made like Indian red from iron oxide pigment. The first recorded use of Kobe as a colour name in English was in 1924. [13] The normalized colour coordinates for Kobe are identical to sienna, first recorded as a color name in English in 1760. [14]