RGB to RAL

About This Tool

This tool solves the problem of translating device-reported RGB values into standardized RAL colors used in European manufacturing. It accepts RGB inputs and optional hex, validates ranges, and produces a nearest RAL color by perceptual distance.
The core workflow converts the input to CIELAB space, then compares against a catalog of RAL colors using a delta-E metric. The closest match yields a RAL code, name, and hex value, plus the reported perceptual distance. An optional advanced mode can switch to ΔE2000 for improved accuracy with certain hues.
Designers, paint suppliers, OEMs, and QA teams benefit from a reproducible, auditable color reference that aligns digital design with physical materials. The tool’s value lies in delivering an actionable mapping (e.g., RGB 120,60,200 → RAL 4003) with a numeric distance that informs tolerance decisions and production outcomes.

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