What are RGB and CMYK color modes?
Most graphic software programs give you the choice to work in either RGB or CMYK color mode. Scanners and digital cameras create images and computer monitors display images using combinations of just three colors: Red, Green and Blue (RGB). These are the primary colors of light, which computer monitors use to display images on your screen. Digital Printing Equipment prints full color images using primary colors of pigment: Cyan (blue), Magenta (red), Yellow and Black (CMYK or CMYK+LcLm). We can print from either CMYK or RGB image files. However, we recommend supplying CMYK files for optimal output. Also, to avoid banding in filled areas of black, define black as follows: C=35 M=35 Y=35 K=100 (never define text as 4-color black unless is more than 24 points)