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The CMYK color model is based on the CMY color model, which omits the black ink. Four-color printing uses black ink in addition to subtractive primaries for several reasons: [2] In traditional preparation of color separations, a red keyline on the black line art marked the outline of solid or tint color areas. In some cases a black keyline was ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Varieties of the color cyan Cyan Color coordinates Hex triplet #00FFFF sRGB B (r, g, b) (0, 255, 255) HSV (h, s, v) (180°, 100%, 100%) CIELCh uv (L, C, h) (91, 72, 192°) Source CSS Color Module Level 3 B: Normalized to [0–255] (byte) The color cyan, a greenish-blue, has notable tints ...
The web colors are more vivid than the cyan used in the CMYK color system, and the web colors cannot be accurately reproduced on a printed page. To reproduce the web color cyan in inks, it is necessary to add some white ink to the printer's cyan below, so when it is reproduced in printing, it is not a primary subtractive color.
The most noticeable result of using light cyan and light magenta inks is the removal of a distinct and harsh dither dot appearance in prints that use light shades of cyan or magenta produced with only the CMYK inks. Usually when printing a dark color the printer will saturate an area with colored ink dots, and conversely, for a light color it ...
The widespread offset-printing process is composed of the four spot colors cyan, magenta, yellow, and key commonly referred to as CMYK. More advanced processes involve the use of six spot colors ( hexachromatic process ), which add orange and green to the process (termed CMYKOG ).
A method of full-color printing is six-color process printing (for example, Pantone's Hexachrome system) which adds orange and green to the traditional CMYK inks for a larger and more vibrant gamut, or color range. However, such alternate color systems still rely on color separation, halftoning and lithography to produce printed images.
The G7 Method is a printing procedure used for visually accurate color reproduction by putting emphasis on matching grayscale colorimetric measurements between processes. G7 stands for g rayscale plus seven colors: the subtractive colors typically used in printing (Cyan, Magenta, Yellow, and Black) and the additive colors (Red, Green, and Blue).
Comparison of some RGB and CMYK colour gamuts on a CIE 1931 xy chromaticity diagram. Specifications for Web Offset Publications, invariably abbreviated to SWOP, is an organization and the name of a set of specifications that it produces, with the aim of improving the consistency and quality of professionally printed material in the United States, and of certain other products, programs and ...