Closest Pantone PMS coated to a hex colour
When you have a brand or design hex value and need a rough Pantone PMS coated equivalent, this tool ranks the closest matches from a curated reference table, with an approximate match percentage. It is handy for briefing a printer or checking whether a screen colour is near a known spot ink — but it is a digital reference, not a substitute for a physical book.
How it works
The tool parses your hex into RGB, then measures the distance from that colour to every Pantone entry in its built-in table using a luminance-weighted “redmean” metric. This formula weights the red, green and blue differences according to the average red level of the two colours, which tracks human perception better than a plain Euclidean RGB distance. The five Pantone colours with the smallest distance are shown, ranked, each with a swatch and an approximate match percentage. Click a result to copy its code.
Why five results instead of one
Several Pantone colours often cluster close to a given hex, and the “best” match depends on what you are optimising for. A designer might prefer the match that is closest in hue even if the lightness differs slightly; a print buyer might want the one that is easiest to spec from a standard coated sheet. Showing five lets you pick with your eye rather than trusting a single algorithmic choice.
Worked example
Enter #0057B8 (a strong royal blue):
| Step | What happens |
|---|---|
| Parse | #0057B8 → R 0, G 87, B 184 |
| Compare | Redmean distance to every Pantone entry |
| Rank | Five smallest distances, highest match % first |
The top results will be deep blues from the coated sheet such as PMS 285 C or 2935 C. The side-by-side swatches let you judge whether the Pantone is a true match or shifts noticeably in hue or saturation on screen.
Understanding the match percentage
The percentage is derived from the colour distance: 100% would be an identical colour, and it falls as the nearest Pantone drifts from your hex. A 95%+ match will look very close on screen; below about 85% you can usually see a visible shift. Remember, though, that a screen cannot reproduce Pantone spot inks exactly — the swatch is a monitor simulation. The percentage is a relative proximity guide, not a print-fidelity guarantee.
When to confirm with a physical swatch book
Always verify a Pantone selection against a real coated swatch book (or a Formula Guide) before committing to print. Monitor calibration, viewing conditions, and the paper stock all affect how a Pantone ink looks in production. This tool is best used to narrow the candidates quickly in the digital workflow; the final decision should rest on a physical chip matched under D50 lighting.
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