color.rl
Parameters
- $color
A color specified in hexidecimal, rgb(), or rgba().
This template calculates the relative luminance of a color, returning a number between 0.0 and 1.0. The relative luminance is used when calculating color contrast. The relative luminance algorithm is defined by the WCAG:
$link[>>http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef]
This template accepts six-digit and three-digit hexidecimal color codes, colors specified with rgb(), and colors specified with rgba(). It does not accept HSL or named HTML colors.