RAL 170 45 05
Smoky Slate Violet
RAL 170 45 05 Smoky Slate Violet is defined by hue 170, lightness 45, and a minimal chroma of 05, a near-neutral mid-dark tone that barely hints at violet beneath its slate-grey surface. It is a natural choice for cinema interior finishes, industrial loft wall surfaces, and contemporary joinery details. The very restrained saturation gives it a rugged, architectural quality that blends seamlessly with concrete, steel, and weathered timber.
Color Reference
The RAL Design system uses Hue-Lightness-Chroma (HLC) notation. Hue describes the color family (0-360°), Lightness describes brightness (0-100), and Chroma describes saturation intensity (0-100+).
WCAG 2.1 AA requires 4.5:1 contrast for normal text. Results show this color as a background.
Spectrum & Perceptual Position
CIELAB is a perceptually uniform color space. Euclidean distance between two colors in this diagram closely matches human visual difference. The dot size shows your selected color; slightly larger dots are the nearest perceptual neighbors.
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Reference + opposite hue with tonal variations
Contrast ratios follow WCAG 2.1 guidelines. Green (≥4.5:1) passes AA for normal text. Amber (≥3:1) passes for large text only. Grey indicates low contrast.
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