A Vim plugin to accurately highlight common color representations.

The left screen shows colortest.txt when the current :colorscheme supplies a hex #RRGGBB background color for the Normal highlight group. This allows us to blend alpha values with the current background color.

The right screen shows the same file when the background color is either supplied as a palette index, or omitted. In this case, we ignore the alpha term and exclude it from the highlight, since we no longer have a precise color value to blend with.

- (#|0x)RGB
- (#|0x)RGBA
- (#|0x)RRGGBB
- (#|0x)RRGGBBAA

- rgb((byte|%), (byte|%), (byte|%))
- rgba((byte|%), (byte|%), (byte|%), ([0,1]|%))
- hsl([0,360], %, %)
- hsla([0,360], %, %, ([0,1]|%))

  cd ~/.vim/pack/plugins/start
  git clone https://github.com/BourgeoisBear/clrzr

Rebuild helptags with helptags ALL, then see :help clrzr for more options.

NOTE: clrzr requires a copy of awk, callable from your system path. This is used to speed up pattern extraction. Almost any version will do. On Unix/Linux/Mac, it is probably already intstalled.

Works in gVim or any terminal with true-color support. If your terminal is true-color, but you are not seeing the colors, add the following lines to your vimrc and restart:

  " sets foreground color (ANSI, true-color mode)
  let &t_8f = "\e[38;2;%lu;%lu;%lum"
  " sets background color (ANSI, true-color mode)
  let &t_8b = "\e[48;2;%lu;%lu;%lum"
  set termguicolors

   set nocursorline

Sometimes, cursorline obscures the highlights added by clrzr. Disable it to see colors as you type them. Very useful in combination with CTRL-A and CTRL-X (increment & decrement)!

This version is based on https://github.com/lilydjwg/colorizer, also found as colorizer.vim on vim.org