La Nuance Registry · 2,385 identities
Universal layerof color.
One stable identity for color, across physical and digital systems.
Explore the Registry ↗Click + drag · click a nuance to flip · screen / print / vision
One system · multiple ways to use it
From color reference to software infrastructure.
La Nuance combines a stable Registry, a physical Color Book, downloadable tools, an API and an open research layer around one shared color identity system.
La Nuance
Search 2,385 identities, open color passports and work from one canonical Registry.
Explore the Registry →02 · PhysicalColor Book
The physical reference for the Registry: 265 anchors × 9 weights in one portable system.
Discover the Color Book →03 · ToolsPlugins
Libraries, plugins, SDKs and the local Engine for design and production workflows.
Get the tools →04 · ResearchResearch
Observer variation, metamerism, machine vision, spectral modelling and protocol experiments.
Read the research →05 · InfrastructureAPI
Resolve stable NUANCE IDs into supported representations and integrate the Registry into software.
Use the API →06 · AccountConsole
Saved colors, collections, API keys, usage, billing, teams and commercial licences.
Account architecture →Color Book
The Registry, in your hand.
A physical reference designed to connect real materials and production workflows back to the same NUANCE identities used by software.
Discover the Color Book →Plugins + Engine
Take La Nuance into your workflow.
Research
Color beyond one observer, one medium or one machine.
A stable vocabulary for observed color.
World → camera → image → matching → NUANCE IDs.
ObserverColor identity without pretending every observer is identical.
Observer variation stays a layer around canonical identity.
SpectralModelled spectral references, explicit validation status.
Separate computational references from physical measurement claims.
API + Business
Use the Registry at software scale.
Start with the versioned API. The account layer is designed for API keys, usage, billing, teams, commercial licences and OEM integration.
Current release
Protocol 1.0 · 1.4.1 R4
Registry: 2,385 identities
Source status: PASS
Standard publication: 17 September 2026