Josh Liljenquist

Private, browser-local utility

Delta E Calculator

Compare two sRGB colors with CIE76, CIE94, or CIEDE2000 perceptual color-distance formulas.

Your input and result stay in this browser tab. Nothing is uploaded, fetched, logged, or stored.

Color A
Color B

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Color-science method

HEX or RGB inputs are converted from nonlinear sRGB to linear sRGB, XYZ, then CIELAB under D65. CIE76, CIE94, and CIEDE2000 retain full internal precision; only displayed results are rounded. CIE94 presets use graphic-arts or textile constants. Delta E is not WCAG contrast, a medical assessment, or a universal perceptibility guarantee.