Conversion depends on the RGB and CMYK profile in use. Sites which offer to convert without choosing a profile are like - well, like a site offering to convert between currencies without asking you the currency! "Hey, 3.00 is worth 7.54! That's great, What currency? I don't know, some currency or other." In this tutorial I’ll be demonstrating how to convert RGB to CMYK with Illustrator. This only requires a few clicks, but some manual adjustments will need to be made after the conversion. You While most colors are convertible from RGB to CMYK, if there are any noticeable color changes during conversion, you may need to revisit a step and adjust some of your values before converting. Inconvertible color swatches that cannot be replicated accurately in InDesign or Illustrator will appear in the preview with a yellow warning triangle Then type “Command + I” to invert the selection. 10. Double-click the channel to bring up the color options. In the new panel: Name the color your selected spot color. Make sure “Spot Color” is selected. Double-click the color box and add in the Spot Color information. Make sure “Solidity” is 100. 11. VtaYeM2.