Color Diff

Color Difference

Drop two colors in and quantify their color difference, contrast and accessibility.

How to read

CIEDE2000: <1 barely visible, ≈5 clearly visible, >10 totally different.

WCAG ratio and grade tell you if it works as text/background.

WCAG contrast checks with one-click accessible fixes.

Tell warm/cool/neutral, convert Kelvin↔RGB and neutralize any color.

Fine-tune with sliders and read every format plus full scales.

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Color difference compares two colors side by side and reports both CIEDE2000 ΔE and the WCAG contrast verdict.

Pick two colors and the page shows them side by side with the ΔE and contrast conclusion.
ΔE ≤ 2 is barely noticeable, 2–5 a slight shift, > 5 clearly different.
When readability matters, confirm the result together with the Contrast check.

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Put the before/after side by side; ΔE tells you if users will notice.
If the two are text vs background, also check the WCAG ratio.
Small ΔE but big lightness gap can still confuse color-blind users — pair with simulation.