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Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye extracted from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria . Dye-bearing Indigofera plants were commonly grown and used throughout the world, particularly in Asia, with the production of indigo dyestuff economically ...
The work on indigo led to the development of a new class of dyes called vat dyes in 1901 that produced a wide range of fast colors for cellulosic fibers such as cotton. [69] Disperse dyes were introduced in 1923 to color the new textiles of cellulose acetate , which could not be colored with any existing dyes.
True indigo is a shrub 1–2 metres (3 ft 3 in – 6 ft 7 in) high. It may be an annual, biennial, or perennial, depending on the climate in which it is grown. It has light green pinnate leaves and sheafs of pink or violet flowers. The rotenoids deguelin, dehydrodeguelin, rotenol, rotenone, tephrosin and sumatrol can be found in I. tinctoria. [3]
This is an accepted version of this page This is the latest accepted revision, reviewed on 9 January 2025. Blue colour associated with Persian pottery For the breed of cat known as a Persian Blue, or Blue Persian, see Persian cat. Not to be confused with Prussian blue. Persian Blue Common connotations Lapis lazuli ; Celestial sphere ; Heaven Color coordinates Hex triplet #1C39BB sRGB B (r, g ...
According to the logic of the RGB color wheel, indigo colors are those colors with hue codes between 255 and 225 (degrees), azure colors are those colors with hue codes between 195 and 225, and cyan colors are those colors with hue codes between 165 and 195. Another way of describing it could be that cyan is a mixture of blue and green light ...
Wrightia tinctoria, Pala indigo plant or dyer's oleander, [1] is a flowering plant species in the genus Wrightia found in India, southeast Asia and Australia. It is ...
Dyeing Pigments for sale at a market in Goa, India Cotton being dyed manually in contemporary India Silk dye in pan on stove. Khotan. Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness.
Yeomsaek (Korean: 염색) is a traditional Korean process for dyeing cloth.. Yeomsaek primarily uses natural colourings such as tea, saffron and gardenia.The most important of these from a cultural perspective is indigo (jjock), which was used for the Korean Royal Family and for weddings.