Command/definecolorgroup

From Wiki
Jump to navigation Jump to search

\definecolorgroup

Syntax (autogenerated)

\definecolorgroup[...][...][x:y:z=,...]
[...]name
[...]gray rgb cmyk spot
[x:y:z=,...]triplet


Syntax

\definecolorgroup[...][...][x:y:z=,...]
[...] name
[...] rgb cmyk gray s
[x:y:z=,...]

Description

\definecolorgroup[myblue][rgb][0:0:1,0:0;0.6,0:0:3] defines three colours myblue:1, myblue:2, myblue:3. If one defines similar gamuts for e.g. green and red, such that equal numbers correspond to equal grayscales, one can easily pick a red, a green, and a blue so that the colours still differ from each other when converted to grayscale.

ConTeXt has predefined colorgroups for red, green, blue, cyan, magenta, yellow, and gray; these are defined in colo-rgb.mkii for MkII, and colo-imp-dem.mkiv ('dem' for 'demo')for MkIV, and may be imported with \usecolors.

Example

  • \usecolors[dem] % use predefined demo colors
    
    % NB: The grayshades of this colorgroup are not calibrated
    % to the ones in colo-imp-dem.mkiv
    \definecolorgroup
       [orange]
       [1.00:0.85:0.80,
        1.00:0.80:0.30,
        0.80:0.50:0.00]
    
    \definepalet[mypalet]
       [myorange=orange:2,
           myred=red:4,
          myblue=blue:6,
         mygreen=green:8]
    
    \showcolorgroup[orange]
    
    \comparepalet[mypalet]
    

See also


Help from ConTeXt-Mailinglist/Forum

All issues with: