Color can make or break your finished product. In order to get the best-looking finished product, you should be working in CMYK color mode. We receive lots of files in RGB color mode every day. The following illustrates the difference between RGB and CMYK once printed.
CMYK stands for the four colors used in color printing: Cyan, Magenta, Yellow, and Black. When working on and saving your files for print, be sure to work in CMYK color mode
RGB stands for the four colors used in video screens, display devices and scanners: Red, Green and Blue. You SHOULD NOT use files in RGB color mode for print projects.
Please convert your files before sending them so that you can adjust the colors accordingly.
Go to Image Menu > Mode > CMYK
Go to File > Document Color Mode > CMYK Color