Delta E 76 Color Difference
Compute the CIE76 (Delta E 1976) difference between two sRGB hex colors via CIELAB.
Description
Compute the CIE76 (Delta E 1976) difference between two sRGB hex colors via CIELAB.
Delta E 76 Color Difference is a focused tool for the following task. Compute the CIE76 (Delta E 1976) difference between two sRGB hex colors via CIELAB. It reports Delta E 76, Lab A, Lab B from the values you provide rather than inventing measurements, coefficients, or professional judgment that are not part of the input.
When to use Delta E 76 Color Difference
Use this color calculation to compare encoded colors under the stated color space, reference white, transfer function, and difference formula.
- Color A
- Required string. First hex color, #RGB or #RRGGBB.
- Color B
- Required string. Second hex color, #RGB or #RRGGBB.
The cited overview of Color difference supplies background for the terminology and domain context used by this tool.1
How Delta E 76 Color Difference works
Compute the CIE76 (Delta E 1976) difference between two sRGB hex colors via CIELAB. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.
- Delta E 76
- Returned number. Euclidean distance between the CIELAB colors.
- Lab A
- Returned list. CIELAB coordinates of color A.
- Lab B
- Returned list. CIELAB coordinates of color B.
Limitations and assumptions
- Numerical color difference depends on calibration, viewing conditions, gamut mapping, adaptation, display characteristics, and the perceptual limitations of the selected formula.
- Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.
Alternative or Complementary approaches
Use a newer perceptual difference model where appropriate and verify critical color matches with calibrated devices and controlled visual evaluation.
References
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Color difference — Wikipedia contributors
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