Color: RGB
Red - Green - Blue aka Additive Color
One method of specifying colors generated onscreen
255 levels of color per channel
Optional fourth channel controls opacity (alpha channel)
Other modes: HSB, LAB, Hexadecimal
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Color: CMYK
Cyan - Magenta - Yellow - Black aka Subtractive Color
One method of specifying color that is printed onto a surface
Colors are broken down into combinations of percentages
Other printing ink systems: Pantone, Focoltone, TruMatch, Toyo
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Color: CMYK
Subtractive Color Model Diagram
Ink color absorbs (subtracts) wavelengths from white light and reflects unabsorbed wavelengths
Unabsorbed wavelengths creates the perception of color
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Color: CMYK & RGB
Compatibilities & Equivalents
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RGB: Hexadecimal Notation
A common way to specify an RGB color in web/screen graphics
Base 10 count: 0 1 2 3 4 5 6 7 8 9
Base 16 count: 0 1 2 3 4 5 6 7 8 9 A B C E F
An alternate way to specify RGB in HTML & CSS : rgba(168,30,128, 0.6)
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