Hexachrome

Hexachrome is a discontinued six-color printing process designed by Pantone. In addition to custom CMYK inks, Hexachrome uses orange and green inks to expand the color gamut for better color reproduction. It is therefore also known as a CMYKOG process.

Hexachrome was discontinued by Pantone in 2008 when Adobe Systems stopped supporting the HexWare plugin software. While the details of Hexachrome were not secret, its use was limited by trademark and patent to those obtaining a license from Pantone. The inventor of Hexachrome is Richard Herbert, who is also the president of Pantone Inc.