C9800 Userís Guide - 16Both devices use very different technologies to represent color.> A monitor uses Red, Green and Blue (RGB) phosphors (orLCDs).> A printer uses Cyan, Yellow, Magenta and Black (CMYK)toner or ink.Very vivid colors (such as intense reds and blues) can bedisplayed on a monitor. These same colors cannot be easilyproduced on any printer using toner or ink.There are certain colors (for example, some yellows), that can beprinted, but cannot be displayed accurately on a monitor.These differences between monitor colors and printer colors arethe main reasons why printed colors do not always match thecolors displayed on screen.MONITOR SETTINGSThe brightness and contrast controls on your monitor can changehow your document looks on-screen.Your monitor color temperature also influences how ìwarmî orìcoolî the colors look.Several of the color matching options make reference to yourmonitorís color temperature.Many monitors allow you to adjust the color temperature throughtheir control panels.There are several settings found on a typical monitor:k=degrees Kelvin, a measurement of temperature5000k or D50 Warmest, yellowishlightingTypically used in graphics artsenvironments.6500k or D65 Cooler Approximates daylight conditions.9300k Cool The default setting for many monitorsand television sets.