luma method

Dimension luma(
  1. Color color
)

Calculates the luma (perceptual brightness) of a color object. Parameters: color - a color object. Returns: percentage 0-100% Example: luma(rgb(100, 200, 30)) Output: 44%

Implementation

//
/// Parameters:
///   color - a color object.
///   Returns: percentage 0-100%
/// Example: luma(rgb(100, 200, 30))
///   Output: 44%
///
Dimension luma(Color color) =>
    Dimension(color.luma() * color.alpha * 100, '%');