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How to use Color Distance Calculator

Enter two colors and the tool reports the CIEDE2000 ΔE distance along with a plain-English read on how similar they are.

Frequently asked questions

What is Delta E (ΔE)?

A number describing how different two colors look to the human eye. Lower means more similar; 0 means identical.

What ΔE counts as a noticeable difference?

A ΔE of about 1 is the threshold of a just-noticeable difference; values under 1 are usually indistinguishable.

Why use CIEDE2000 instead of RGB distance?

CIEDE2000 models human perception far better than raw RGB distance, especially for blues and near-neutral colors.

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