colortest-python(1) 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.


-b, --block
Display as block format (vs cube) [default].
-c, --cube-slice
Display as cube slices (vs block).
-e N, --88to256=N
Convert (expand) 88 color value N to an 256 color value.
-f, --foreground
Use color for foreground text.
-l, --rgb
Long format. RGB values as text.
-n, --numbers
Include color escape numbers on chart.
-p, --padding
Add extra padding (helps discern colors).
-r N, --256to88=N
Convert (reduce) 256 color value N to an 88 color value.
-v, --vertical
Display with vertical orientation [default].
-x, --hex
Include hex color numbers on chart.
-z, --horizontal
Display with horizontal orientation.
Show program's version number and exit
-h, --help
Display short help and exit.






Program was written by Thomas John Eikenberry <[email protected]>

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