In offset printing artwork files, some customers also made the files in CMYK or some in RGB. What’s the difference? Firstly, let’s check the image below. Obviously RGB is much brighter than that of CMYK. It’s much important point to get their difference.
RGB, namely red, green, and blue. RGB is designed from the principle of color light emission. Popularly, its color mixing mode is like three red, green and blue lights. When their light overlaps with each other, the colors are mixed, and the brightness is equal to the sum of the brightness of the two, the higher the brightness of the mixture, the additive mixture. However, in offset printing, printing machine use CMYK colors to print your paper shipping boxes, as a result, that’s much great if you would save the file in CMYK format, not RGB.