c256 will tell you if your terminal supports 256 colors. It can also be used to list the actual hexadecimal RGB values of each mapped color.

c256 [-c columns] [OPTIONS]


-s,   --square  square format (default)
-l,   --list    list format
-c,   --col     n columns
      --hex     show hexadecimal values of each color

-h    --help    help message
-m    --man     view manpage


The background notation to use is <ESC>38;5 - \033[38;5;100m

The foreground notation to use is <ESC>48;5 - \033[48;5;197m


Written by Magnus Woldrich