Classification of all the commercial textile dyes by their generic name and chemical constitution has been done by the Color Index (C.I.), a journal published by the Society of Dyers and Colorists (United Kingdom) in association with the American Association of Textile Chemists and Colorists (AATC).. 333
However, if we take general dye chemistry as one of the basis for classification, textile dyestuffs can be grouped into the following categories for an easier understanding