Colour Index International is a reference database, jointly maintained by the Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists. It was first published in 1925 in printed form, but is no longer available in this format, and is now published exclusively on the web. It serves as a common reference database of manufactured color products, and is used by manufacturers and by consumers such as artists and decorators.

Colorants (both dyes and pigments) are listed according to Colour Index Generic Names and Colour Index Constitution Numbers. A detailed record of products available on the market is presented under each Colour Index reference. For each product name, Colour Index International lists the manufacturer, physical form, and principal uses, with comments supplied by the manufacturer to guide prospective customers.

For manufacturers and consumers, the availability of a standard classification system for pigments is helpful because it resolves conflicting historic, proprietary, and generic names that have been applied to colors.

External Links

• American Association of Textile Chemists and Colorists
• Colour Index International
• Society of Dyers and Colourists