Pantone Colours provides a chart on its website that identifies the codes used by the vast majority of printers, designers, manufacturers, marketers and artists to match colors. Using a Pantone reference means that materials are reproduced in identical colors no matter who designs or prints them.
Alternatives to Pantone references include the Munsell color matching system and CMYK or hexidecimal references. The Munsell Color Company's website includes color matching charts using the Munsell three-value system. Several design websites provide charts or tools to help with matching CMYK or hex colors to international Pantone references and vice versa. Stocksigns.ca and Ginifab.com are two of these, with Ginifab.com featuring a handy slider tool that allows users to select the desired shade.