#646A6C
- Brightness
- 104.5
- HSL (°,%,%)
- 195°, 4%, 41%
- HSV V %
- 42%
- Lab
- 44.4, -1.9, -1.9
- CMYK (%)
- 7%, 2%, 0%, 58%
- PNG size
- 5.8 KB
- Tone / Feel
- dark, muted cool hue
Black text
3.82:1
Fail (normal) · AA (large) (large)
White text
5.50:1
AA (normal) · AAA (large) (large)
Recommended text: White (5.50:1 — AA / AAA (large))
Color Profile: #646A6C
Common Name: Basalt Grey
Color Values:
RGB: 100, 106, 108
HSL: ~195°, 6%, 41%
Contrast Ratios:
Contrast vs White: 6.7 (AA Pass)
Contrast vs Black: 5.3 (AA Pass)
Mood & Usage:
This color evokes a steady, calming mood often associated with stone and natural minerals, making it a favored choice in spaces that require neutrality yet depth. Its subtle blue-gray undertone adds a modern touch without overpowering, perfect for art and design fields focused on minimalism and sophisticated atmospheres.
Notable Named Matches:
- RAL Classic Basalt Grey —
#646A6C(Exact Match, ΔE=0.00) - Pantone FHI Lava Smoke —
#64676A(ΔE=1.65) - Vista Grafton Grey —
#63686A(ΔE=0.83) - Benjamin Moore Charcoal Slate —
#65686A(ΔE=1.32) - Dulux FOREST GREY —
#646967(ΔE=2.46)
Why Designers Use It:
- Neutral and Versatile: Basalt Grey’s balance between blue and gray tones makes it a highly adaptable base for layering other colors without clashing. It complements natural materials like stone and metal, fitting perfectly in both contemporary and traditional design contexts.
- Industry Preference: Widely used in architecture, interior design, and product design, especially for industrial and tech aesthetics. Its muted quality conveys professionalism, making it a frequent pick in corporate branding and UI/UX design where subtlety is key.
- Material Associations: Inspired by volcanic basalt rock, the color conveys solidity and endurance. This natural origin gives it an organic feel, often evoking textures of mineral and stone surfaces.
- Regional & Cultural Notes: Popular across European design standards (notably RAL and British Standards), signaling a preference for timeless, understated hues that fit well in colder, urban climates.
- Trend Status: Remains steady in popularity with a slight uptick in sustainable and eco-conscious design sectors, where natural stone tones help connect modern design with earth-based inspirations.