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Version: 332275 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)


xcolmix - an RGB colour mixer


xcolmix [-display host:dpy] [-name appname] [-visual class] [-depth d] [-private] [-shared] [-stdcmap] [-debug d] [-sync] rgb-database-file

The rgb-database-file is the file which holds the X-windows colour definitions, when absent: /etc/X11/rgb.txt is used.


This manual page documents briefly the xcolmix, command. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page.

xcolmix is a colour mixer that enables you to mix your own colours in order to determine three values (the R/G/B code, or red-green-blue mix) of a colour. You can use those colours to, e.g., define the foreground or background of X applications which support it. Furthermore, xcolmix lets you retrieve RGB values from the X system's database of `predefined' colours.

xcolmix is non longer actively maintained upstream. If you would like to take it over, talk to the author: Karel Kubat <>.


xcolmix is built with the XForms Graphical User Interface Toolkit for X, and hence supports a number of flags which are interpreted by XForms. The flags must be stated before any file arguments, and are:
-display host:dpy
defines the X display.
-name appname
defines the application name (default is xcolmix).
-visual class
TrueColor, PseudoColor etc...
-depth d
visual depth in bits
forces a private colourmap.
forces a shared colourmap.
forces a standard colourmap.
-debug l
prints debugging information, l is the level.
forces synchronous mode.


Xcolmix lets you define a separate background and a foreground colour for a part of the mixer window (the logo). Use this logo to, e.g., compare whether a particular text colour looks good on a particular background.

Use the `foreground / background' buttons to select between the foreground or the background. Then, use the three silders labelled `red', `green' and `blue' to change the colour.

The button `lookup' starts a second window, with a browser showing the system colour database. The default database name is /etc/X11/rgb.txt, though you can overrule this filename with a file argument in the command that starts up xcolmix.


Karel Kubat <>

This manual page was written by Peter S Galbraith <>, for the Debian GNU/Linux system (but may be used by others).

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