##  [Lightness (L\*)](/index.php/lightness-l) 

  ##  [Lightness (L\*)](https://humanitites.quantumdictionary.io/lightness-l-0) 

  

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Definition

A perceptual attribute expressed in the CIELAB color space as L*, a dimension scaled commonly from 0 (black) to 100 (reference white) that represents perceived lightness of diffuse, opaque samples by applying a nonlinear transformation to relative CIE Y (luminance) with respect to a specified reference white; L* is dependent on the chosen reference and therefore on viewing/illuminant conditions.