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| Harvard Crimson (color) ： ウィキペディア英語版 |
Crimson
Crimson is a strong, red color, inclining to purple. It originally meant the color of the kermes dye produced from a scale insect, ''Kermes vermilio'', but the name is now sometimes also used as a generic term for slightly bluish-red colors that are between red and rose.
== History ==
Crimson (NR4) is produced using the dried bodies of the kermes insect, which were gathered commercially in Mediterranean countries, where they live on the kermes oak, and sold throughout Europe.〔(Naturenet article with images and description of ''Kermes vermilio'' and its foodplant )〕 Kermes dyes have been found in burial wrappings in Anglo-Scandinavian York. They fell out of use with the introduction of cochineal, because although the dyes were comparable in quality and color intensity it needed ten to twelve times as much kermes to produce the same effect as cochineal.
Carmine is the name given to the dye made from the dried bodies of the female cochineal, although the name crimson is sometimes applied to these dyes too. Cochineal appears to have been brought to Europe during the conquest of Mexico by the Spaniard Hernán Cortés, and the name 'carmine' is derived from the French ''carmin''. It was first described by Mathioli in 1549. The pigment is also called ''cochineal'' after the insect from which it is made.
Alizarin (PR83) is a pigment that was first synthesized in 1868 by the German chemists Carl Gräbe and Carl Liebermann and replaced the natural pigment madder lake. Alizarin crimson is a dye bonded onto alum which is then used as a pigment and mixed with ochre, sienna and umber. It is not totally colorfast.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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