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colortest-python(1) User Commands colortest-python(1)


colortest-python - Display color test chart and convert between color values


  colortest-python [options]


Displays 256, 88 and 16 color tables depending on what the terminal supports. Also provides for conversion between 256 and 88 color values.

The program automatically detects 8, 16, 88, 256 color capabilities (via ncurses) and displays the appropriate color charts. Program can display the colors as blocks or 2d cubes optionally with color values overlaid in int or hex values, it can show the full rgb text string and show the display with a vertical (default) or horizontal orientation.

In addition to the color charts it can also convert between 256 and 88 color values. This can be useful when converting various terminals like between urxvt and xterm-256.

The goal of this program was to provide the functionality of all the various Perl and sh scripts in one place with some bells and whistles.


Display as block format (vs cube) [default].
Display as cube slices (vs block).
Convert (expand) 88 color value N to an 256 color value.
Use color for foreground text.
Long format. RGB values as text.
Include color escape numbers on chart.
Add extra padding (helps discern colors).
Convert (reduce) 256 color value N to an 88 color value.
Display with vertical orientation [default].
Include hex color numbers on chart.
Display with horizontal orientation.
Show program's version number and exit
Display short help and exit.






colortest-8(1) colortest-16(1) colortest-16b(1) colortest-16b(1)


Program was written by Thomas John Eikenberry <>

This manual page was written by Jari Aalto <>. Released under license GNU GPL version 3 or (at your option) any later version. For more information about license, visit <>.

2022-11-21 colortest-python