816 Colors with CMYK, RGB & HEX Formulas! New! Includes CMYK and RGB formulas, plus Hex numbers for web site design Improved! Larger color swatches and expanded guidelines for use - 24 color cards plus an in-depth instructional guide make color planning easy - Handy, take-along size-refer to it at home, in your studio, or while shopping - Based on the Ives Color Wheel - Over 100,000 sold! In protective case.