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Hybrid L-cone monochromacy simulation (research-grade). Choose LMS model, rod fallback, severity & deep mode. Inspect chromaticity collapse toward the L-axis (red primary) and compute ΔE differences.

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Base color
LMS & rod controls
Rod mode:
Severity 100%
Image simulation
JPG/PNG (max 1200×1200). Simulated canvas next to original.
Research notes
L-cone monochromacy (Red-cone mono) preserves only L-cone responses while M and S channels are removed. A minimal rod contribution stabilizes luminance without introducing chromatic bias. Severity blends between trichromatic vision and pure L-only reconstruction for experimental analysis.
Swatches — Reference vs Red-cone mono
Reference
HEX: — • RGB: — • xy: —
Red-cone mono
HEX: — • RGB: — • xy: —
ΔE76
—
ΔE2000
—
Deep preview
Reference
Simulated
Chromaticity (CIE xy)
L-axis target (approx)
L-axis: 0.640, 0.330
Image simulation

L-only reconstructions are performed in linear LMS space using the selected LMS model. M and S channels are removed; inverse transforms handle reconstruction. Rod mixing is minimal and stabilizes luminance only.

Multi-condition comparison
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Compare normal, Condition A and Condition B across multiple severities. If an image is loaded it will be processed into the grid, otherwise colour swatches are shown.