What is the LAB color space?

CIE LAB is a color model designed to approximate human vision. L* represents lightness, a* represents the green-red axis, and b* represents the blue-yellow axis.

Why use LAB instead of RGB or HSL?

LAB is perceptually uniform, meaning equal numeric differences correspond to equal perceived color differences. This makes it ideal for color comparison and color grading.

What white point does this tool use?

The conversion uses the D65 illuminant, which is the standard for most digital imaging and CSS color specifications.

What is a typical range for the a* and b* values?

Both a* and b* typically range from about -128 to +127 for colors within the sRGB gamut, though the LAB space itself is unbounded.

HEX to LAB Color Converter

Enter a HEX code and get the L*, a*, b* values in the CIE LAB color space.

Color

Last updated: 2026-06-09 · Reviewed by Nham Vu