Indigo 

Indigofera Tinctoria

Indigo is a powder from the leaves of the indigo plant called Indigofera tinctoria. It is one of the oldest dyes known to humankind. It is the only natural blue.

Dye is obtained from the processing of the plant's leaves. They are soaked in water and fermented in order to convert the glycoside indican naturally present in the plant to the blue dye indigotin. The precipitate from the fermented leaf solution is mixed with a strong base.

Artwork by Bianca Kann