Now, modern workflows allow printers to use color profiles that automatically match CMYK ink to RGB values to produce results that are much more similar. Designers actually gain some added benefits under this new approach. Since most designers today design for print and digital applications at the same time, keeping files in RGB gives you more flexibility as well. Save my name, email, and website in this browser for the next time I comment. December 12, no comments.
Thus, they need to use a different color scheme, one based on reflecting light instead of producing it. This is where CMYK comes into play. It is used to print in full color on items that reflect light but do not generate it, such as paper and fabric. Starting with a white piece of paper, which reflects every color of light, we can use Cyan, Magenta, and Yellow inks to subtract specific colors of light to make a wide gamut of colors.
Theoretically, combining Cyan, Magenta, and Yellow ink makes black, but because inks are not perfectly aligned to our RGB vision, we also add blacK ink Key , which reflects no light, to help provide darker tones and truer blacks. Because the CMYK profile is forced to subtract light instead of generate it, it cannot produce anywhere near as wide a spectrum of colors as RGB.
The illustration to the left compares the gamut of colors achievable with several different RGB profiles vs. A printing machine creates images by combining CMYK colors to varying degrees with physical ink. This is known as subtractive mixing. All colors start as blank white, and each layer of ink reduces the initial brightness to create the preferred color. When all colors are mixed together, they create pure black. Use CMYK for any project design that will be physically printed, not viewed on a screen.
If you need to recreate your design with ink or paint, the CMYK color mode will give you more accurate results. EPS can be a great source file alternative to AI because it is compatible with other vector programs. When you create a new document in Photoshop, the Color Mode option will be included with other parameters in the New Document window.
When you create a new document in Illustrator, the Color Mode option will be hidden under the Advanced Options collapsable menu.
Click on the arrow to expand this menu. Because InDesign allows you to mix color spaces, you can change the color mode of individual swatches whenever you create one, but in general it is best to keep colors consistent. One easy way to check the color mode in InDesign is to use the Color panel. Be prepared for the colors to look different darker or lighter due to additive or subtractive mixing.
If you are a designer, you will have to explain this to your client. This will bring up a dialogue box. What you want to pay attention to is the Destination Space field. Use the dropdown to select your desired color mode. For general purposes, the first two options are fine, but you may want to check with your printer beforehand to be sure of what they need.
To change the color mode of your Illustrator file, select all objects in your document. You can change the color mode of your InDesign document in the export process. In the Export Adobe PDF popup box, select Output on the left side and use the Destination dropdown menu in the Color section to choose your desired color mode.
Knowing how the colors interact to define a pigment can give you greater control over how the final color looks, and therefore greater control over your final design. This article was originally written by Peter Vukovic and published in
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