RAL 9004 Signal Black
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#282828
RAL color
Signal Black (#282828) is a very dark charcoal-black from the RAL Classic system, used as the standard dark counterpart to Signal White in traffic, safety, and transport applications. Applied to vehicle bodies, industrial equipment, and architectural elements requiring a deep, authoritative dark tone, it provides near-complete visual density with a slight warmth that prevents it reading as completely flat. Signal Black is associated with authority, precision, and technical sophistication.
Renk Değerleri
#282828
40, 40, 40
0,0, 0,0%, 15,7%
0,0, 0,0%, 15,7%
0,0%, 0,0%, 0,0%, 84,3%
0,2768 0,0 89,9
Özellikler
Renk Psikolojisi
Dark grays and charcoals project authority, formality, and sophisticated restraint. They are the color of graphite, storm clouds, and evening suits, carrying weight without the absolute finality of black. These tones suggest seriousness and expertise tempered by subtle warmth.
Design Usage
Dark gray is the preferred text color over pure black for reducing eye strain on light backgrounds. It serves as the standard dark-mode surface color in Material Design and other major design systems. Pair it with a single vivid accent color for a minimal, high-impact visual hierarchy.
Renk Harmonileri
Renk Körlüğü Simülasyonu
CSS Kullanımı
background-color: #282828;
color: #282828;
border-color: #282828;
Neutral 800
#262626
Tailwind Tonları
Kontrast Denetleyicisi
Beyaz üzerinde metin
14,74:1
Siyah üzerinde metin
1,42:1