#303939
a deep, muted cyan · cool · closest name: darkslategray
RGB
48, 57, 57
HSL
180°, 9%, 21%
CMYK
16, 0, 0, 78
Luminance
0.0385
Every format
| HEX | #303939 |
| RGB | rgb(48, 57, 57) |
| HSL | hsl(180, 9%, 21%) |
| CMYK | cmyk(16%, 0%, 0%, 78%) |
| LAB | lab(23.2 -3.8 -1.3) |
| LCH | lch(23.2 4.0 198.7) |
| OKLCH | oklch(0.336 0.012 196.6) |
Copy-ready code
/* CSS */
color: #303939;
background-color: #303939;
/* Tailwind (arbitrary) */
class="text-[#303939] bg-[#303939]"
/* SCSS */
$brand: #303939;
/* SwiftUI */
Color(red: 0.188, green: 0.224, blue: 0.224)
/* Android */
Color.parseColor("#303939")Accessibility — WCAG contrast
Aa
#303939 on white: 11.86:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#303939 on black: 1.77:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red18.8%
Green22.4%
Blue22.4%
CMYK percentages
Cyan15.8%
Magenta0.0%
Yellow0.0%
Key (black)77.6%
Color previews
#303939 text on a black background
contrast 1.77:1
Card sample
#303939 text on a white background
contrast 11.86:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #303939;
Background color
Panel with #303939 background
background-color: #303939;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #303939;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(48, 57, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(48, 57, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #303939; background: linear-gradient(135deg, #303939, #303339);