CIE Lab
Calculate CIE Lab instantly with the exact formula and a worked example.
CIE Lab
R
G
B
L (Lab)
53.2408
a*
80.09
b*
67.2
C* (chroma)
104.55
h° (hue)
40
More about: CIE Lab
What it calculates
The “CIE Lab” calculator computes L (Lab) from 3 parameters: r, g, b.
A converter between units of measure, currencies, and sizes.
Example calculation
With parameters R = 255, G = 0, B = 0 the result is 53.24 (sRGB, D65 reference white).
How to use
- Enter r, g and b — each field above is adjustable with a slider.
- L (Lab) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is CIE Lab calculated?
The CIE Lab calculator computes L (Lab) from r, g, b. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the CIE Lab calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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