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Colour RGB & CMYK

RGB (red, green, and blue) refers to a system for representing the colours to be used on a computer display. Red, green, and blue can be combined in various proportions to obtain any colour in the visible spectrum. Levels of R, G, and B can each range from 0 to 100 percent of full intensity. Each level is represented by the range of decimal numbers from 0 to 255 (256 levels for each colour), equivalent to the range of binary numbers from 00000000 to 11111111, or hexadecimal 00 to FF. The total number of available colours is 256 (8bit) x 256 (8bit) x 256 (8bit), or 16,777,216 (24 bit) possible colours.

CMYK is a scheme for combining primary pigments. The C stands for cyan (aqua), M stands for magenta (pink), Y is yellow, and K stands for black. The CMYK pigment model works like an "upside-down" version of the RGB (red, green, and blue) colour model. Many paint and draw programs can make use of either the RGB or the CMYK model. The RGB scheme is used mainly for computer displays, while the CMYK model is used for printed colour illustrations (hard copy).

PacBlue accepts files containing RGB and/or CMYK colour spaces.

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PacBlue Digital Imaging Inc.
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