Delta E Calculator
Calculate perceptual color difference between two colors using CIEDE2000 formula. Professional-grade color analysis tool essential for quality control, color matching, and ensuring consistent brand colors across digital and print mediums.
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Complete Guide: Delta E Calculator
Everything you need to know about using this tool effectively
The Delta E Calculator measures the perceptual difference between two colors using the CIELAB color space. It supports three Delta E formulas: CIE76 (simple Euclidean distance), CIE94 (weighted for saturation and hue), and CIE2000 (the most perceptually accurate). You enter L*a*b* values for two colors and the tool calculates all three Delta E values. All processing happens in the browser.
This tool implements three standard Delta E formulas. CIE76 is the Euclidean distance between two LAB points. CIE94 adds weighting factors for lightness, chroma, and hue. CIE2000 includes additional corrections for neutral colors, blue region, and lightness. The output shows all three values so you can choose the appropriate one for your application.
Print color quality control
Compare a printed sample against a target color to verify the print run is within tolerance.
Manufacturing color matching
Measure the color difference between a product and its specification for batch consistency.
Display calibration
Compare a displayed color against a reference to assess monitor accuracy.
Color science research
Calculate Delta E values for experiments studying color perception.
Enter LAB values for color 1
Type the L*, a*, and b* values for the first color.
Enter LAB values for color 2
Type the L*, a*, and b* values for the second color.
View the Delta E values
The tool shows CIE76, CIE94, and CIE2000 results.
Interpret the result
Use the interpretation guide to understand whether the difference is perceptible.
Delta E below 1: imperceptible. 1-2: barely noticeable. 2-3.5: noticeable. Above 3.5: clearly different.
CIE2000 is the most accurate for modern applications but CIE76 is still widely used for simplicity.
For print, a Delta E (CIE2000) below 2 is typically acceptable.
Convert your RGB or hex colors to LAB before using this calculator.
What is Delta E?
Delta E is a numerical measure of the perceived difference between two colors. A lower value means the colors are more similar. It is widely used in color science, print, and manufacturing.
Which formula should I use?
CIE2000 is the most perceptually accurate and recommended for modern applications. CIE76 is simpler but less accurate. CIE94 is a middle ground.
Is my data sent to a server?
No. All calculation happens in your browser. Nothing is transmitted.
How do I convert hex to LAB?
Use a color converter to go from hex to RGB to XYZ to LAB, then enter the LAB values here.
What Delta E is acceptable for print?
For most print applications, a Delta E (CIE2000) below 2 is considered acceptable. Critical color work may require below 1.