less-plugin-advanced-color-functions

Adds some advanced colour functions that helps in finding more contrasting colors:

• invertluma: inverts the luma of a color giving a version darken or lighter than the original
• contrastmore: if color1 and color2 have a similar luma, it contrast color2 a little bit more. If the color2 luma resultant is greater than 1, or less than 0, its luma is pivoted around color1 luma.
• autocontrast: if color1 and color2 have a similar luma, it contrast color2 a little bit more. If the color2 luma resultant is greater than 1, or less than 0, its luma gets inverted.

lessc usage

npm install -g less-plugin-advanced-color-functions

and then on the command line,

lessc file.less --advanced-color-functions

Programmatic usage

var LessPluginAdvancedColorFunctions = require('less-plugin-advanced-color-functions'),
    AdvancedColorFunctions = new LessPluginAdvancedColorFunctions();
less.render(lessString, { plugins: [AdvancedColorFunctions] })
  .then(

Browser usage

Browser usage is not supported at this time.

Example

@color1: #ff0000;
@color2: #ee0000;

.colors {
invertluma: invertluma(@color1);
contrastmore: contrastmore(@color1,@color2);
autocontrast: autocontrast(@color1,@color2);
autocontrast50: autocontrast(@color1,@color2,50%);
}

outputs:

.colors {
  invertluma: #ff0000;
  contrastmore: #650000;
  autocontrast: #ff7878;
  autocontrast50: #ffdede;
}

The compiled coloures will look like that shown below: