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Inspector color/spot-color-finder

Spot Color Approximation Tool

Overview

Spot Color Approximation Tool finds the nearest match to your color in a small, hand-built library of generic reference swatches, along with the perceptual color difference (ΔE) between them. It's deliberately not built on Pantone, RAL, or any other proprietary spot-color system — those require a license to redistribute — so results should be treated as an approximate starting point, not a final print decision.

Getting a rough print referenceFind a generic named reference close to a brand color before a print conversation with a vendor.
Describing a color without a swatch bookGet a plain-language reference name and distance for a color when you don't have an official swatch book on hand.

Key features

Finds the nearest match in a generic, open reference swatch library
Shows the perceptual color difference (ΔE) between your color and the match
Explicitly not Pantone, RAL, or any other licensed spot-color system
Deeplinkable via a ?hex= URL parameter

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

The file is opened, worked on and written back inside this tab. No upload step exists in this tool — there is nowhere for the bytes 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 an approximate match for.

See the nearest reference swatch

The closest match in our generic swatch library appears, along with the perceptual distance (ΔE) between it and your input.

Use it as a starting point

Treat the result as a rough reference, not a final spot-color decision — confirm any real print job against your print vendor's actual swatch book.

Frequently asked

Is this a Pantone or RAL color matching tool?

No. Pantone, RAL, and similar systems are proprietary and their exact color data isn't legally redistributable without a license. This tool matches against a small, hand-built library of generic, openly-named reference swatches instead.

What does the ΔE number mean?

It's the perceptual distance between your color and the matched swatch in Lab color space — smaller means closer. A ΔE under about 2-3 is generally considered a close visual match; larger values mean the match is only approximate.

Can I use this result directly for a print job?

Treat it as a rough starting point only. Real spot-color matching for print requires the actual proprietary swatch book or ICC data for whatever system your print vendor uses.

Keys

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

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