OPEN COLOUR IDENTITY WORKFLOW

Find colour.
Understand colour.
Keep its identity.

A browser-ready edition of ATLAS Clarus Connect. No installation, server, account or network connection is required.

PKL FULL REFERENCEIdentity first. Production feasibility later. Device values third. Measured QC last.

PICK A PIXEL

Image Picker

RGB-ONLY IDENTITY BINDING · MASTER 8283ab91…747c4

Upload an image, choose a single pixel or a predefined square sample area, then click with the loupe. The observed 8-bit sRGB value is bound deterministically to the nearest ATLAS master reference. No Lab or ΔE is used for the primary assignment.

Your first palette · four steps

Choose an image and click a pixel or a sample area.
Open in Hover to inspect the reference. The Wheel is optional.
Add to palette, then give your palette a name.
Export Clarus JSON to keep a backup. Import it to restore the same references. Use ASE or GPL when taking swatches into a design app.

Continue to production: choose Prepare for print to carry the same references into two independent paths: 4C and ECG. Attach output profiles and export the handoff for local prepress.

Browser storage is local, not a backup. Clearing browser data or moving the HTML file may make saved palettes unavailable.

DISCOVER

Hover Library

MASTER 8283ab91…747c4

UNDERSTAND

Colour Identity Wheel

A′ v0.4 LOGIC · FROZEN

The wheel locates the selected reference. v0.5 diagnostic fields are descriptive only and do not alter A′ selection or ranking.

ACTIVE OUTPUT PROFILE

sRGB IEC61966-2.1

Screen output context. It never replaces the master identity.

Space / PCS: RGB / XYZ
Intent: Relative colorimetric
QC: NOT_MEASURED

ACCESSIBILITY PREVIEW

Screen perception

White textDark text

Approximate sRGB review only; not medical certification.

MASTER PKL v2 · ILLUMEXT

Illumination resilience

Descriptive master evidence; no physical sample is measured.

ARBE λ* REFERENCE ANALYSIS

Lock and compare

HARMONY

Geometric relationships

TONAL FAMILY

Same H and C across L*

MY PALETTES

Active palette · documented identities

Create and manage several local palettes from the palette button. Exports preserve frozen reference identity and master provenance, not production approval.

MULTI-PROFILE PRODUCTION VIEW

One identity, several output contexts

MEASURED SAMPLE VALIDATION

Append QC without overwriting identity

NOT_MEASURED

Measured L* Measured a* Measured b* Instrument / source

No measurement is bound. The selected identity remains the immutable target.

CONTINUE TO PRODUCTION

Prepare for print

PREPARATION · OUTPUT CALCULATION OPEN

One frozen reference set. Two independent production paths. Prepare 4C and ECG side by side, each with its own output profile and print settings.

Job name

PARALLEL PATH

4C · CMYK

Input: the frozen ATLAS references shown above.

4C output profile · CMYK

Printing condition Substrate Rendering intent Black-point compensation

Reference CMYK values: Not calculated
Feasibility: Not evaluated
Measured QC: NOT_MEASURED

PARALLEL PATH

ECG · 7 channels

Input: the same frozen ATLAS references shown above.

ECG output profile · 7CLR

Printing condition Substrate Rendering intent Black-point compensation Confirmed channel order

Reference seven-channel values: Not calculated
Feasibility: Not evaluated
Measured QC: NOT_MEASURED

CMYKOGV channel order and FOGRA55 applicability must be confirmed from the supplied profile and printing condition.

PKL-FIRST PARALLEL IMAGE COMPARISON

One source. One PKL reference. Two production previews.

Load a browser-sRGB source. Every pixel is first bound to an exact RGB value from the active PKL master. Both ICC previews then use that same PKL Full Reference.

Load preview image

PNG, JPEG or WebP · local processing · preview up to 1200 px on its longest side.

PKL Full Reference ↔ 4C preview

Reference · PKL master RGB

After · 4C ICC preview

Load an image to begin.

PKL Full Reference ↔ ECG preview

Reference · PKL master RGB

After · ECG ICC preview

Load an image to begin.

Controlled chain: browser sRGB source → PKL Full Reference → selected 4C or ECG output profile → sRGB preview. PKL assignment uses RGB squared distance only, with atlas_row_id as the deterministic tie-break; Lab and ΔE do not define identity. Return to sRGB is relative colorimetric, with no paper-white simulation. These are screen previews, not measured print results.

Both paths start from the same ATLAS references. Neither path receives the other path’s device values. Profile changes preserve the source identity.

Keep the handoff as a JSON file; this preparation is held in memory only. Attached ICC files (up to 16 MiB each) are embedded in the JSON. Reference device values, PDF/X output and physical measurement remain separate steps. The readable report is a preparation record, not a colour proof.

EXPLORE

Appearance Pixel Simulator

SIMULATION · NOT MEASURED QC

A local visual exploration layer. Material, finish, illumination and angle change the simulation — never the frozen reference identity.

MaterialFinishIlluminationViewing angle30°Surface depth

CONNECT

How ATLAS Clarus connects to design applications

DOCUMENTATION · DESKTOP APPS NOT INCLUDED

Choose an application to see what ATLAS Clarus can already hand over, what has been verified, and what still needs practical testing. This page explains the connection; it does not run the desktop application inside the browser.

EVIDENCE

About this bundle

READY_PENDING_VISUAL_AUDIT

Identity baseline

13,283 master references. Zero-based atlas_row_id. Deterministic RGB-only reference binding. Workflow v3.4.0.

Local by design

This edition runs from index.html. It sends no analytics, user actions or colour selections anywhere.

Claim boundary

A displayed or simulated colour is not a physical measurement, production approval, print proof or certification.

Help & evidence

Offline guide and FAQ
Licensing and attribution
Validation baseline

These internal links work without extracting additional files.

HELP

Frequently asked questions

IDENTITY FIRST

What is ATLAS Clarus?

An open workflow for finding, understanding, collecting and handing over colour-reference identities without silently redefining their source.

How do I build a palette?

Choose a colour in Hover and select Add to palette. You can create, name, duplicate, sort, import and delete several local palettes. The active palette is shared by Hover and Wheel.

Which exports are included?

ASE for Adobe/Affinity, GPL for GIMP/Inkscape, Figma-compatible Tokens JSON, CSS custom properties and Clarus JSON with identity evidence.

Does an export preserve the identity?

Clarus JSON retains the full reference metadata. Other application formats carry usable names and exact master RGB, but their host applications may not retain every provenance field.

Is the displayed colour physically exact?

No. Screen colour depends on display, profile and viewing conditions. It is a reference representation, not a measured print, textile, coating or production approval.

Does the bundle track users?

No. It runs locally, sends no analytics or colour selections, and stores the shared palette only in this browser's local storage.

What does frozen A′ v0.4 mean?

The established selection and ranking logic is not changed by this browser edition. Interaction Wheel v0.5 adds descriptive diagnostics only.

Is this a Pantone library?

No. Observed source-context views are descriptive and claim no Pantone identity or equivalence. ATLAS references remain independently addressed.

ACKNOWLEDGEMENT

Credits & licensing

OPEN COLOUR WORKFLOW

ATLAS Clarus Connect builds on open colour-reference work and keeps upstream attribution, ATLAS modifications and third-party boundaries visible.

Reference data

HLC-derived database material is used with acknowledgement to freieFarbe e.V. and freieFarbe.de.

Copyright (c) freieFarbe e.V.

ATLAS Clarus work

The reference files were converted, indexed, reorganised or enriched for ATLAS Clarus. They are modified data products, not unchanged original freieFarbe distributions.

Licence map

Original software: GPL-2.0-or-later.
Original documentation: CC BY 4.0.
HLC-derived reference data: zlib licence, with upstream notices.

The complete attribution and licence summary is included here so it remains available when index.html is opened directly.

Independent project

ATLAS Clarus Connect is not affiliated with, endorsed by or certified by Pantone. No Pantone library, identity or equivalence is licensed or asserted.

Other product and company names remain the property of their respective owners.

Source

Source code, modification history and validation records are published at HelabHLC/atlas-clarus-connect.

Colour boundary

Reference identity is not physical colour certification. Screen simulations, exports and application values do not constitute a measured production result.

COLOUR · SOURCE · HISTORY

Colour handoff

PUBLIC PILOT

Take your colour decisions with you. The provenance travels in the companion JSON file, together with the original values, Atlas addresses and decision history.

1. Choose your starting colours

Starting point

First colourNumber of colours

Choose up to 250 colours. The complete source palette stays attached. References are a deliberate new starting point; an unrecorded original remains unknown.

Or load a saved Colour Kit / handoff JSON Drop one decision JSON here. Existing decision IDs and history are preserved.

One working set is kept in this browser. Save its full JSON before replacing it with a different set. Source-palette edits do not change an existing working set.

2. Save or hand over

No colour decisions loaded.

The ZIP contains RGB swatches, full provenance JSON and a checksum manifest. Keep these files together. The same JSON opens in Colour Kit 0.3.0.

What travels with the colour?

The recorded image name, pixel or area location, available image hash, original RGB, Atlas assignment and later decision revisions stay in the JSON. ASE swatch names link to those records. Hashes check consistency; they do not authenticate authorship.

A native Adobe round trip remains untested. The provenance JSON is a companion file and is not automatically embedded in an Adobe document.

3. Check a returned palette

Returned ASE + original palette.clarus.json + handoff.json I confirm the returned RGB values are intended as sRGB.

Keep each swatch’s AC_ identifier prefix. Return exactly the exported RGB swatches. Changes become linked revisions of the same colour decisions.

Checking the reference data …

Open Image Projects · edit images with history

YOUR COLOURS · YOUR DECISIONS

Colour Projects

PUBLIC PILOT

Your colours. Your decisions. A project you can take with you and keep developing.

Collect colour sets, record changes and choose the design versions you want to use. Everything runs in this browser. Download the project JSON as your portable backup.

1. Open your project

Saved in this browser

New project name

Open a project JSON Or drop project.clarus.json here. Extract handover ZIPs first.

No project open.

Project name

Project note

2. Bring your colours

Colour set name

Use Colour handoff to prepare recorded originals from your active palette. Its decision IDs and complete source document travel into the project.

Or add a Colour Kit / handoff JSON

3. Save and share

Project JSON reopens the complete project. The ZIP adds a readable passport and separate working / chosen swatches with their provenance JSON. Colour Kit opens the palette JSON inside each set.

Keep source images separately. A chosen version records a design decision; it is not measured production approval or proof of authorship.

Checking the project workspace …

← Colour Projects & palettes

YOUR IMAGE · EVERY RECORDED CHANGE

Image Projects

IMAGE EDITING PILOT

Recolour a selected colour or area. Make an area transparent. Undo without losing the story.

The original file and frozen starting pixels stay inside your image-project JSON. The handover ZIP adds the original file and current PNG. Work stays in this tab until you download it.

1. Start or reopen

Image project name New image · PNG / JPEG Include the current Colour Projects palette as a starting snapshot

Up to 4,194,304 pixels and an 8 MiB source file. Larger images are rejected without resizing. Palette changes and image edits remain separate.

Reopen image project · JSON / ZIPOr drop an Image Projects JSON or exported ZIP here.

2. Save and hand over

Your colleague opens the ZIP or image-project JSON in Image Projects. PNG alone does not preserve the full history. A linked palette snapshot can also be opened separately in Colour Projects.

Open an image to start. This workspace is not automatically saved in browser storage.

Edits use browser-decoded 8-bit sRGB. Recolouring applies a flat RGB value and preserves existing opacity; making pixels transparent keeps their earlier RGB values in the project history.