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 currently contains over 27,000 individual products listed under 13,000 Colour Index Generic Names. It was first printed in 1925 but is now published exclusively on the web. The index serves as a common reference database of manufactured colour products and is used by manufacturers and consumers, such as artists and decorators.