Описание тега cielab
In CIE LAB, LAB stands for Lightness, position between red and green, and position between yellow and blue. It is a colour space designed as more related to human perception than RGB or HSV spaces. It was proposed by the International Commission on Illumination (CIE).
CIE LAB (strictly speaking L*a*b*, as opposed to LAB in Hunter LAB) is a chromatic value colour space and is said to be the most complete colour space specified by the International Commission on Illumination (Commission internationale de l'éclairage - CIE). It describes all the colors visible to the human eye and was created to serve as a device-independent model to be used as a reference.