Spot Color Approximation Tool

Overview

Find the nearest match to your color in a small, hand-built library of generic swatches, with the ΔE color difference between them. It does not use Pantone, RAL or other proprietary systems, which need a license to share, so treat the result as a starting point rather than a final print choice.

Getting a rough print referenceFind a generic named color close to your brand color before you talk to a printer.
Describing a color without a swatch bookGet a plain reference name and distance for a color when you have no swatch book at hand.

Key features

Nearest match in an open, generic swatch library
Shows the color difference (ΔE) to the match
Not Pantone, RAL or any licensed system
Link straight to a color with ?hex=

Set

Color Tools 11

Neighbours

01 Accessible Palette Generator 02 Accessible Text Color Finder 03 Brand Palette Accessibility Checker 04 Color Blindness Simulator 05 Color Converter 06 Color Editor

Specification

Command: color.spot_color_finder
Set: Color
Input: text
Output: —
Max file: no limit
Batch: single file

Runtime

Engine: native oklch
Threads: single
Isolated: —
WebGPU: —
Memory: —

Transport 0 B

Your file is opened, worked on and saved inside this tab. This tool has no upload step, so your file has nowhere else to go.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/

How it works

Enter a color

Type or pick the color you want to match.

See the nearest reference swatch

The closest generic swatch appears, with its ΔE distance from your color.

Use it as a starting point

Check any real print job against your printer's own swatch book.

Frequently asked

Is this a Pantone or RAL color matching tool?

No. Pantone, RAL and similar systems are proprietary, and their color data cannot be shared without a license. This tool uses a small, hand-built library of generic, openly named swatches instead.

What does the ΔE number mean?

It is the perceptual distance between your color and the swatch, measured in Lab color space. Smaller is closer: under about 2–3 looks like a close match, and higher values are only approximate.

Can I use this result directly for a print job?

Only as a rough starting point. Real spot-color matching needs the official swatch book or ICC data for the system your printer uses.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/