HEX to RAL Converter

How HEX to RAL matching works

RAL Classic is a European color-matching standard widely used for paint, coatings, plastics, and architectural products. Unlike HEX or RGB, RAL codes refer to physical color cards rather than a single digital colorimetric definition, so most digital tools (including this one) work from the commonly published sRGB approximations of each RAL Classic card.

This tool converts your HEX color and every color in the bundled RAL Classic palette to CIE L*a*b* (a perceptually uniform color space), then measures the Delta-E (CIE76) Euclidean distance between them. The RAL entry with the smallest Delta-E is the closest visual match — a Delta-E under about 2.3 is generally considered imperceptible to the human eye, while values above 10 indicate a clearly different color.

Need a different color space? Try HEX to LAB, Color Name Converter, or the all-in-one color converter.