Couleur

TAURI / RUST WIN32 ✓ MICROSOFT STORE USD $9.99

Discreet Accessibility Color Assistant & Industrial Formulation Studio for Windows

Engineered for colour-blind and low-vision professionals, architects, electrical draftspeople, and industrial paint technicians. Point at anything on your screen with a 10x optical loupe across all monitors, hear colors named in plain language across 17 locales, explore Sound-of-Color musical sonification, match against 6 international color standards, and test metameric stability under a 6-illuminant light booth.

Get it on Microsoft Store Download & install on Windows USD $9.99 ▶️ Watch Trailer ← ALL SOFTWARE

Available for Windows 11 & Windows 10 (64-bit). Single native MSIX package with zero cloud dependencies; 100% on-device local execution.

🎁

Forever free: The Original Couleur Windows App (2017 UWP Edition)

Archival standalone release includes original executable & complete User's Guide PDF (448 KB .zip).

💾 Download Original 2017 App (.zip)

Windows may warn you about this download. The 2017 app is not digitally signed, so your browser or Microsoft Defender SmartScreen may say it is uncommon or could be harmful. It is safe: choose Keep (in Edge: … → Keep → Show more → Keep anyway), and if SmartScreen appears when you run it, choose More info → Run anyway. SHA-256: 0760ead2aa0c3c394b91190306eda589055370cd992928e97b7df703a3491b6a

Couleur Light Booth Metamerism Simulator

1. Light Booth

2. Spectral Curve

3. Live Eyedropper

4. Offline Privacy

Light Booth: see how two samples compare under six standard illuminants, with a CIEDE2000 ΔE and a match or mismatch result for each light.

🎯 Core Capabilities & Architecture

🔍 Live Eyedropper & 10x Loupe

Sample pixels anywhere across all connected monitors with native Win32 GDI capture. Switch between 1x1 Point, 3x3 Smooth (9 px), and 5x5 Area (25 px) gamma-corrected linear energy averaging to suppress sensor noise and halftone dither.

🗣️ 17-Language Voice & Sonification

Everyday plain-language color naming in 17 complete locales with native Windows Text-to-Speech (TTS). Integrated Sound-of-Color Web Audio API synthesizer translates Hue into musical frequencies (130.8 Hz to 1046.5 Hz) for low-vision accessibility.

📐 6 Industrial Color Standards

Real-time nearest-code identification for AS 2700 (188 standards), BS 381C / BS 4800 (47 standards), US FS 595C (23 standards), Dulux Powdercoat / Colorbond® (24), Resene Total Colour (12), and nearest RAL Classic code (216).

💡 Light Booth & Metamerism

Simulate sample appearance shifts across 6 standard illuminants: D65 Daylight, D50 Horizon, A Incandescent, F2 Fluorescent, F11 Retail, and Warm LED. Flags metameric failure with CIEDE2000 ΔE tolerance grading and exportable QA certificates.

🎨 Paint Mixing Studio & Solver

Optical subtractive blending with 10 pure single-pigment concentrates and Titanium White scattering. Features a 3D Specular Matte-to-Gloss Sphere (0 to 100 GU), multi-stage coordinate descent recipe optimizer, 100-step undo stack, and commercial batch dispense cost calculator.

📊 Laboratory Spectrophotometry

Reconstructed visible spectral reflectance curve grapher (380 nm – 750 nm) with CIE 1931 dominant wavelength, 3D CIELAB color space gamut visualizer, and instant native AutoCAD (.acb) and Adobe (.ase) swatch book export.

⌨️ System Shortcuts & Navigation Cheat Sheet

Shortcut	Context	Action / Function
`Ctrl + Alt + C`	Couleur Active	Sample pixel color under cursor anywhere on screen (active loupe)
`Ctrl + Alt + H`	Couleur Active	Toggle Always-on-Top Floating Mini-HUD mode
`Ctrl + Alt + S`	Couleur Active	Toggle Audio Color Sonification stream (Sound-of-Color)
`?` or `F1`	Global	Open Keyboard Shortcuts & Built-In Guide modal
`Ctrl + Z` / `Ctrl + Y`	Paint Studio	Undo / Redo pigment dispensing history (100-step stack)
`Mouse Wheel`	CAD Canvas	AutoCAD-style smooth continuous zoom (0.05x to 64x) centered at pointer
`Double-Click`	CAD Canvas	Zoom to Fit (AutoCAD Zoom Extents)

⚙️ Technical Specifications & Verification

Operating System	Windows 11, Windows 10 (64-bit architecture)
Runtime Engine	Native Win32 Rust + Tauri + Microsoft Edge WebView2 Runtime
Package Identity	`54598ElectritectsPtyLtd.Couleur` (MSIX Windows App Store package)
Color Science Engine	CIEDE2000 (Sharma / Luo-Rigg verified benchmarks), CIE 1931 xyY, CIELAB Lab*, Bradford Chromatic Adaptation
Audio Sonification	Web Audio API Sine Oscillator (130.8 Hz – 1046.5 Hz frequency mapping)
Automated Verification	18 automated verification test suites across ~330 mathematical invariants (100% green pass)
Privacy & Telemetry	100% Offline. Zero telemetry, zero analytics, zero external network connections. All screen pixels and camera frames processed strictly in volatile RAM.
Distribution	Official Microsoft Store • Product ID: `9NJX991KC5MF`
Original 2017 Edition	Forever Free: Standalone original UWP release including User's Guide PDF • Download Couleur-UWP-2017.zip (448 KB)

❓ Frequently Asked Questions

Q: Is the original 2017 Couleur Windows application still available?

Yes! The original 2017 UWP Windows edition is preserved and hosted permanently as a Forever Free archival download. It includes the original standalone executable and the complete User's Guide PDF in a lightweight 448 KB package: Download Couleur-UWP-2017.zip.

Q: How does the Live Screen Eyedropper work across multiple monitors?

Couleur leverages native Win32 GDI screen capture. When activated, a high-precision 10x optical loupe follows your cursor across all connected physical monitors, sampling the exact RGB pixels and naming them in real time.

Q: What is Sound-of-Color audio frequency sonification?

Sound-of-Color translates color hue directly into musical audio frequencies using the Web Audio API. Red tones resonate at deep frequencies (130.8 Hz), yellow and green rise through the midrange, and vibrant blue/violet tones reach crystal high pitches (up to 1046.5 Hz), giving visually impaired professionals an immediate auditory perception of color.

Q: Does Couleur upload any of my screen pixels or camera images?

No. Couleur operates entirely offline on your local device. Screen pixels and camera frames are analyzed purely in volatile memory (RAM) to calculate color values and are never written to disk, transmitted over the network, or shared with Electritects or third parties.

Q: Can I export my color palettes to AutoCAD and Adobe?

Yes. Couleur includes native generators for AutoCAD Color Book XML files (.acb) compatible with AutoCAD, Civil 3D, and Revit, as well as binary Adobe Swatch Exchange files (.ase) for Photoshop, Illustrator, and InDesign.