While RAL Design chart has 1625 colors to offer. Keep in mind that RAL Classic set originally contains only 215 colors to pick from, so the conversion result is rather arbitrary ir most cases. – The radio buttons below allows you to pick a proffered set of RAL colors to pick from. – The fourth field is for Key (K) value in the original color (which is also referred to as black), ranging from 0 (none) to 100 (all). – The third field is for Yellow (Y) value in the original color, ranging from 0 (none) to 100 (all). – The second field is for Magenta (M) value in the original color, ranging from 0 (none) to 100 (all). – The first field is for Cyan (C) value in the original color, ranging from 0 (none) to 100 (all). The form requires CMYK color to perform conversion. For each entered CMYK color, the corresponding RAL color will be determined. This is a simple and easy to use color converter tool that converts CMYK colors to the best matching RAL colors. In case you have your CMYK colors expressed in decimal numbers, make sure to multiply each decimal value by 100 to get acceptable values. Important: This input form requires you to provide CMYK values in percentage from 0 to 100% for each color (Cyan, Magenta, Yellow, Black).