ARBE λ* Demo Explorer
Start with your input. Explore eight curated atlas references.
This version replaces the weak near-white examples with a curated 8-reference set from the atlas. Each prepared input leads to a distinct valid atlas reference.
The demo is not a live nearest-match service. It uses prepared atlas-based examples to show the route from input to snapped reference, ARBE profile, structural gate, and light-change behavior across the 8-reference set.
Reference basis: HLC Colour Atlas XL CIELAB by freieFarbe e.V.
Why this matters
A better demo set should actually reveal structure.
What was wrong before
The previous near-white pastel inputs were too similar. They hid the structure instead of showing it. This version uses eight distinct atlas references that stay readable as a set.
What this version changes
The demo now shows eight curated references, a selected snapped reference, its ARBE profile, and the relation view across the whole set. All references stay visible.
Prepared inputs are demo examples only. The valid system identity still begins at the snapped atlas reference.
Input gallery
Prepared inputs and snapped references
Reference foundation
Built on the HLC Colour Atlas XL CIELAB by freieFarbe e.V.
A valid system color exists only as a valid atlas reference of the form Hxxx_Lxxx_Cxxx. ARBE values are descriptive structural attributes of an already valid atlas reference.
Primary identity
Inputs are starting points. The snapped atlas reference is the primary identity inside the system.
Without a valid atlas reference, there is no valid result in the system.
Decision logic
Validation gate → ARBE profile → structural gate → light-change view
This version separates the steps clearly. First, a valid atlas reference must exist. Then the ARBE profile is shown. Then structural relations are classified. Only after that does the demo show light-change behavior.
Validation gate
The demo continues only once a valid Hxxx_Lxxx_Cxxx reference exists.
Structural gate
Structural comparison follows the priority Δλ* → Δμ₂ → Δσ*. Light-change behavior is shown as a secondary relation view.
All eight prepared references remain visible in this version.
Selected case
Selected snapped reference and relation view
Input
—
—
—
Snapped reference
—
ARBE profile
- λ*_V2: —
- λ*_EE: —
- Δλ*: —
- μ₂: —
- σ*: —
- μ₃: —
Relations in the 8-reference set
Selected relation
—
- Δ(Δλ*): —
- Δμ₂: —
- Δσ*: —
Light-change view (secondary)
- ΔE00 D50: —
- ΔE00 D65: —
- ΔE00 A: —
- ΔE00 worst: —
- ΔE00 span: —
How to read the result
The relation view spans all eight curated references.
Light-change view
For each relation, the demo shows D50, D65, and A-based ΔE00 values plus worst-case and span. This remains secondary to the structural gate.
The purpose is to reveal relations, not to hide them.
One garment · multiple illuminants
Show the same 8 atlas references as one textile unit under D50, D65, and A.
The reference identity stays fixed as Hxxx_Lxxx_Cxxx. Only the light-dependent view changes. D50 is the comparison baseline for the secondary drift numbers shown below.
Standard illuminant
D50
This is the baseline garment view. The eight references are rendered as one ordered textile unit.
Standard illuminant
D65
Daylight shift view. The references remain the same set, but the visible unit changes under D65.
Standard illuminant
A
Warm-source shift view. The references remain the same set, but the visible unit changes under illuminant A.
This light-change view is a secondary attribute layer. It does not replace the atlas reference identity, the Brent-based λ*_V2 requirement, or the structural priority of Δλ* → Δμ₂ → Δσ*.
Who this is for
Relevant wherever reference-based clarity matters.
Research & Development
For teams working with measurable color structures and spectral relations.
Design Systems & Material Decisions
For workflows that need structure before styling claims.
Startups with their own color visions
For teams looking for a healthy, transparent, and physically grounded starting point.
The system does not create colors. It reveals structure in existing references.
Current status
This version fixes the interaction and the example quality.
The demo now uses a curated 8-reference set, updates the selected reference correctly, and shows the relation view across the full set.
Prepared demo examples are still not live nearest-match computations.
Interested?
Interested in the method or a pilot conversation?
If this way of structuring color decisions is relevant to your work, we would be glad to continue the conversation.