Convert Lab to Lch

Enter values for an Lab to convert it to Lch, or vice versa.

CIE-L*ab
0 to 100
-128 to 128
-128 to 128
CIE-Lch
0 to 100
0 to 100
0 to 360
Log

Lab

Cie-L*ab is defined by lightness and the color-opponent dimensions a and b, which are based on the compressed Xyz color space coordinates. Lab is particularly notable for it's use in delta-e calculations. Read more about it here.

Lch

Lch is similar to it's cousin Cie-L*ab, except that it's been rearranged in the shape of a sphere which makes it useful for applications like high-end photo editing and retouching images. Read more about it here

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Looking for the code?

All calculations were doing using the open source ColorMine library.

The code used for the Lab and Lch conversions can be found on Github:

Conversion Example:

var lab = new Lab();
var lch = lab.To<Lch>();

Color conversions performed using the open source ColorMine library.

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If you're into color, color theory or design you should definitely check out the award winning Nix Color Sensor. It really is a game changing tool.

Looking for a specific conversion?