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CMC l:c Delta-E Calculator

Rgb
0 to 255
0 to 255
0 to 255
Cmy
0 to 1
0 to 1
0 to 1
Cmyk
0 to 1
0 to 1
0 to 1
0 to 1
Hsl
0 to 360
0 to 100
0 to 100
Xyz
0 to 1
0 to 1
0 to 1
CIE-L*ab
0 to 100
-128 to 128
-128 to 128
CIE-Lch
0 to 100
0 to 100
0 to 360
Yxy
0 to 100
0 to 1
0 to 1
Rgb
0 to 255
0 to 255
0 to 255
Cmy
0 to 1
0 to 1
0 to 1
Cmyk
0 to 1
0 to 1
0 to 1
0 to 1
Hsl
0 to 360
0 to 100
0 to 100
Xyz
0 to 1
0 to 1
0 to 1
CIE-L*ab
0 to 100
-128 to 128
-128 to 128
CIE-Lch
0 to 100
0 to 100
0 to 360
Yxy
0 to 100
0 to 1
0 to 1
Constants

Calculation Result: 0

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Using the Calculator

Enter values for your chosen color spaces and we'll calculate delta-e for you using the CMC l:c algorithm. The Cmc l:c formula allows for lightness and chromas values to be passed in as well. The most common values are 2:1 for "acceptability" and 1:1 for "imperceptability".

Supported color spaces include Rgb, Cmy, Cmyk, Hsl, Xyz, CIE-L*ab, CIE-Lch, and Yxy.

Other delta-e calculators

Note: ColorMine uses the sRgb color space. More information on sRgb vs AdobeRgb.

About CMC l:c

There are a few popular ways of mathmatically comparing colors, most notably CIE76.

CMC l:c is another such method that was devised in 1984 by the Colour Measurement Committee of the Society of Dyers and Colourists based on the Lch color model. This method incorporates thresholds that allow the users to weight the difference based on the ratio of lightness to chroma that is applicable to the task at hand.

The most common ratios are 2:1 for "acceptability" and 1:1 to the threshold of "imperceptability".

The Math

C# code for for Cmc l:c

Delta-E calculations 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?