The RGB (Red, Green, Blue) color model lights up video images
and graphics on your computer monitor. Every image is composed
of a value (1 to 255) of the three colors. The color model
is additive, meaning red, green, and blue mixed together at
the maximum value (255) emit their greatest light, which is
mode is often used by web designers. The gamut, or range of
colors, in RGB is greater than CMYK. When you convert RGB
images to CMYK, you will lose extra RGB data, and some colors
will appear duller.
The color model contains 256 shades of gray. Shade 0 is black
and shade 255 is white. This color model is used when you
want to create black-and-white images.
This color model is used to create a printed page. With CMYK
(Cyan, Magenta, Yellow, Black), every image is composed of
varying percentages of the four colors. This color model is
subtractive, meaning when cyan, magenta, yellow and black
are mixed together, they absorb light and appear black.
model is used by printers and desktop publisher where documents
created are printed on paper.
A duotone is a black-and-white photograph printed using black
plus one additional color. In desktop publishing, this is
a grayscale image enhanced with an additional color.
is often used by desktop publishers and photographers looking
for a richer tone than grayscale can provide. Some inks in
printers cannot accurately represent all 256 shades of gray.
Hence, using duotone with the additional color helps provide
a richer tone.
The Pantone Matching System is a system of precisely choosing
ink colors. Desktop publishers pick a numerically designated
color from a fan-shaped book of swatches, which show exactly
how the colors will print on paper.
is often used by desktop publisher and printers to accurately
match logo colors or other graphics that must look exactly
the same when printed on different media (letterheads, business
cards, sales literatures).
Web-safe colors are a set of 216 RGB colors that look the
same on a computer monitor regardless of the platform or web
browser used. Web-Safe is used by web designers who wants
to ensure that their graphics would not dither, a fuzzy look
created when a monitor tries to approximate a color by mixing
colors of neighboring pixels.