RAL DESIGN SYSTEM - The CIELab-based colour system
The RAL DESIGN system provides 1,625 colours arranged according to hue (H), lightness (L) and chroma (C).
RAL D4 - Colour atlas containing all 1,625 RAL DESIGN colours:
• Atlas size 31.5 x 28.0 cm
• Colour size 1.7 x 1.7 cm
• Semi matt
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