LABColor

LABColor[l,a,b] represents a color in the CIELAB color space with lightness l and color components a and b. 

LABColor[l,a,b,α] specifies opacity α. 

LABColor["string"] returns a color from an HTML color name etc.

LABColor[color] returns the CIELAB representation of color.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.