Web versus Print

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Title: Web versus Print

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Web versus Print

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Web versus Print

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Definition of terms

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Major Differences

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Color
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Color

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Color WEB RGB

up to 24-bit (3x8-bit channels)
Red, Green, Blue primary colors
Additive
created by adding intensities of red, green, and
blue light to black ( no light on a computer
screen)(0-255).
Each color channel 256 variations
16,777,216 possible colors.
Your computer screen displays light, the more
colors that are added, more light is added,
result lighter color

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Print CMYK
K

a 32-bit model (1x8-bit channel for each)
Cyan, magenta, and yellow are the secondary
colors of RGB and are opposites to them.
When RGB light strikes an object, the amount of
C,M,Y in the object's pigmentation affects how
much light is reflected back (we see reflected
light).
Cyan absorbs red light
Magenta absorbs green light
Yellow absorbs blue light.
Subtractive, CMYK result of subtracting amounts
of red, green, and blue light.
4-color process

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Gamut

The most common usage refers to the subset of
colors which can be accurately represented in a
given circumstance, such as within a given color
space or by a certain output device.
out of gamut. For example, pure red which is
contained in the RGB color model gamut is out of
gamut in the CMYK model.

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Color Management Systems (CMS)

Pantone Matching System (PMS)
An industry standard color-matching system used
by printers and graphic designers for inks,
papers and other materials.
Pantone uses exact percentages of cyan, magenta,
yellow, and black to create colors.
A common system for identifying pre-mixed or spot
ink colors
Converts to 4-color process

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Major Differences