RAL 850-4
Rich Charcoal
RAL 850-4 Rich Charcoal is a rich mid-dark warm dark grey with dense charcoal undertones from the RAL Effect 850 group. This substantial, authoritative shade commands attention on industrial covers, exterior housings, and commercial counters. Its deep warmth and excellent opacity make it a dependable choice for demanding applications.
Color Reference
RAL Effect colors combine a base shade with a metallic or pearl variant. Base shades (-1 through -6) offer tonal gradation within a color family. The -M suffix indicates a metallic finish with shimmer and depth for architectural and automotive applications.
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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