ARBE λ* FP → Illuminant Appearance
Workflow: Atlas reference or R_380...R_730 → Shape-Fingerprint → FP/PKL exact match → Hxxx_Lxxx_Cxxx → illuminant attributes.
Workflow: Atlas reference or R_380...R_730 → Shape-Fingerprint → FP/PKL exact match → Hxxx_Lxxx_Cxxx → illuminant attributes.