This is my entry for colorchallenge initiated by @kalemandra. Today is Saturday. The color of the day is indigo Here is my entry.

Hello steemitians...today i m sharing about indigo colour dye..

Indigo Dye

Indigo dye is an organic compound with a distinctive blue color (see indigo). Historically, indigo was a natural dye extracted from the leaves of certain plants, and this process was important economically because blue dyes were once rare. A large percentage of indigo dye produced today – several thousand tons each year – is synthetic. It is the blue often associated with denim cloth and blue jeans.

Uses

Indigo is among the oldest dyes to be used for textile dyeing and printing.The primary use for indigo is as a dye for cotton yarn, which is mainly for the production of denim cloth for blue jeans. On average, a pair of blue jean trousers requires 3–12 g of indigo. Small amounts are used for dyeing wool and silk.

History of natural indigo

Indigo is among the oldest dyes to be used for textile dyeing and printing. The oldest known fabric dyed indigo dating to 6,000 years ago was discovered in 2009 at Huaca Prieta, Peru.[3] Many Asian countries, such as India, Japan, and Southeast Asian nations have used indigo as a dye (particularly silk dye) for centuries. The dye was also known to ancient civilizations in Mesopotamia, Egypt, Britain, Mesoamerica, Peru, Iran, and Africa. Indigo was also cultivated in India, which was also the earliest major center for its production and processing.

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