Delta E Calculator: Compare Color Differences in Lab
The Delta E Calculator measures the perceptual distance between two colors in Lab space. Choose from ΔE76, ΔE94, and ΔE2000 (CIEDE2000), which accounts for interactions between hue, lightness, and chroma. Lab values are computed in D65. A result below 1.0 is generally imperceptible, while a result above 49 is described as opposite colors.
The Delta E Calculator measures the perceptual distance between two colors in Lab space. It provides a way to compare color differences using ΔE76, ΔE94, or ΔE2000 (CIEDE2000), so you can calculate and review a Delta E result without reaching for a spreadsheet. Lab values are computed in D65.
The calculator offers three Delta E formulas. ΔE2000 is described as the current standard and corrects for interactions between hue, lightness, and chroma that older ΔE76 and ΔE94 formulas do not handle as accurately. Enter the color values, review the available options, and read the calculated result; you can also change an input and see how the result moves.
Delta E is a measure of perceptual distance, rather than simply a count of differences between color values. As a general guide, a result below 1.0 is usually imperceptible, while a result above 49 is described as “opposite colors.” Comparing results with different formulas can help when you need to check a reported value or understand how a formula affects a color comparison.
The Delta E Calculator runs entirely in your browser. Your input is processed on your device; nothing is uploaded, stored, or sent to a server. It has no server dependency, so after the page loads, the calculator continues to work offline.
This browser-based color difference calculator is useful for developers, designers, and anyone who needs to compare two colors or verify a Delta E figure. It is free to use and lets you calculate a result directly in the browser.
Step 1: Enter the values for the two colors you want to compare. Delta E measures their perceptual distance in Lab space.
Step 2: Review and adjust the available options. The calculator supports ΔE76, ΔE94, and ΔE2000 (CIEDE2000).
Step 3: Read the calculated Delta E result to see the perceptual difference between the colors.
Step 4: If needed, change an input or option and check how the result changes.
Use case: Calculate a Delta E value without setting up a spreadsheet. Enter the color values and use the result to assess their perceptual distance.
Use case: Check a Delta E figure someone shared with you. Recalculate the comparison to independently review the number.
Use case: Compare the results from ΔE76, ΔE94, and ΔE2000. Seeing the values side by side can help you understand how the formula affects a color comparison.
Use case: Explore how changing one color value affects the result. This is useful when reviewing how a color adjustment changes perceptual distance.
Use case: Use the result to discuss whether two colors are likely to look different. The calculator provides context through general Delta E reference points.
Use case: Calculate color differences while working in the browser instead of opening a separate spreadsheet. The tool processes the calculation on your device.