RAL 040 30 10
Smoky Walnut
RAL 040 30 10 Smoky Walnut occupies hue 040, lightness 30, and a restrained chroma of 10, a subdued dark brown that recalls aged walnut heartwood and smoked oak. It is ideal for library furniture finishes, museum cabinetry linings, and traditional interior millwork. The very low chroma at this dark level gives it a near-neutral warmth that feels timeless and distinguished.
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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