Click on the color swatch next to the layer name and select the color from the drop-down menu. PRO TIP: There is no single “correct” way to convert CMYK colors to RGB, as the final appearance of the colors will depend on the specific colors being used and the desired effect. However, there are a few general tips that can be followed: If you use 100% black (K), you'll end up with a deep gray, not a true black (see the CMYK values in the image below). To get rich black, you need to add the right amount of all four colors: cyan, magenta, yellow, and black. The blackest black you can get when printing in CMYK is C-75 M-68 Y-67 K-90. 2 Correct answers. You can only expect HEX numbers to stay in RGB files. Just so you know what's happening: HEX numbers (which are RGB, as Monika has mentioned) do not translate to CMYK exactly, so (based on your colour management settings) you get the closest it can get in CMYK percentages when it converts. You cannot go backwards. Are you ready to be a color expert? You can change RGB to CMYK with a few clicks of the button in Adobe Illustrator or Photoshop!Add your design to some awes In Illustrator go to File > Document Mode > CMYK Color and in Photoshop go to Image > Mode > CMYK Color. Then change the color to 100% Black and export the PDF again. Share. Improve this answer. *rgb Images placed into Illustrator will remain rgb when you save as a pdf (and do not convert to a color destination), even if the Illustrator file uses the cmyk document color mode. You can use the Output Preview tool in Acrobat to identify rgb and cmyk elements in your pdf. CMYK and RGB: An Introduction. RGB is the color of physics and of your computer monitors. It is additive color. In this system, red plus green plus blue give you white. This is how your monitor works. If all three elements of a pixel are at their maximum value, you see white. Black is the total absence of color. CMYK is the color of traditional Welcome to what is probably the Number 1 'gotcha' for people new to print design :-) and yes, people who encounter it for the first time not pre-warned almost always run into just before a deadline RGB black is simple. It's just no light coming from the screen. CMYK black isn't simple. For this reason, data for printing machines must have color data that can be expressed in CMYK. Although RGB-data can be color converted into CMYK, since CMYK expresses colors with ink, the range of colors (gamut or color space) that can be expressed compared to RGB, which expresses colors with light, is more narrow. The main options you need to take into account are: RGB -> CMYK and PMS ->CMYK or export the native format (RGB will stay as RGB and PMS as such) Save the color profile used in this conversion. Resample images beyond a specific PPI resolution. Method of compression of these images. Flatten transparency and effects. Embed fonts or convert them H9aT.