RAL 090 25 10
Dark Fern Shadow
RAL 090 25 10 Dark Fern Shadow occupies hue 090, lightness 25, and a restrained chroma of 10, a subdued near-neutral dark cool green that recalls the underside of fern fronds in deep shade. It is ideal for museum cabinetry interiors, archival room wall finishes, and traditional joinery details. The low chroma at this dark level gives it a near-neutral coolness that feels timeless and quietly organic.
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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