RGB to RAL Colour Converter

Find the closest RAL Classic colour for any RGB value, with all 217 RAL colours built in.

R (0-255)

G (0-255)

B (0-255)

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How the nearest RAL match is calculated

Your colour is compared against all 217 RAL Classic colours and the closest one is returned, using a weighted RGB distance (the "redmean" approximation) which weights the channels closer to how the eye perceives them than a plain Euclidean distance would. Everything runs in your browser.

Important: RAL colours are not RGB values

RAL Classic colours are defined by physical paint samples, not by screen values. The hex values used here are the widely used screen approximations from Wikipedia's List of RAL colours, and the same RAL code can look noticeably different when printed on different substrates. Use this converter for on-screen reference only — for paint mixing, printing or production work, always confirm against a physical RAL fan deck.

See the full RAL Classic chart (all 217 colours) →

How it works

The RGB value is compared against all 217 RAL Classic colours and the closest one is returned, using a weighted RGB (redmean) distance.

Examples

Input	Output
rgb(205,186,136)	RAL 1000 Green beige
rgb(208,176,132)	RAL 1001 Beige
rgb(233,166,29)	RAL 1012 Lemon yellow

Frequently Asked Questions

Is there an exact RGB to RAL formula?

No. RAL colours are defined by physical paint samples, not by RGB values, so any RGB to RAL result is a nearest-match approximation, not an official conversion.

Why does my RAL match look slightly off on screen?

Because the hex values used for screen display are approximations of the real paint colour. The same RAL code can also look different on different monitors and when printed.

Which RAL colours are included?

All 217 entries of the RAL Classic range (1000-9023) as listed in Wikipedia's List of RAL colours.