rgb vs. cmyk screen vs. print. why two modes? print and monitor uses two different ways of producing...
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RGB vs. CMYK
Screen vs. Print
Why two modes?
Print and monitor uses two different ways of producing color (CyanMagentaYellow blacK) When printing, ink is used to
place an image on a page (RedGreenBlue) Files for TV and video use light to
project an image
RGB Mode
Uses additive color theory All colors must be combined to create white
RGB is brighter than CMYK on screen
RGB Mode
Uses 3 (8-bit) channels Pixels can produce 1 of 256 shades of R,G, & B Three channels combines to produce 24-bit color Can produce 16,777,216 colors (2 to the 24 power)
RGB Mode
Not all colors in RGB can be reproduced using CMYK printing
When designing, work on images in RGB until all editing is complete.
Working is RGB mode is faster and there are more editing options
CMYK mode
Uses subtractive color theoryNo colors added to create white
Based on 4-color process printingUses 4 channels on screen CMYKThe 4th (black) channel does not increase number
of colors Black is used simply to create pure black on the printed
page
CMYK mode
Cyan Magenta Yellow normally produces black. Inks have impurities which create a muddy
brown color
CYMK has smaller gamut than RGB
RGB vs. CMYK
Additive colors Subtractive colors
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