#171521
a deep, soft blue · warm · closest name: black
RGB
23, 21, 33
HSL
250°, 22%, 11%
CMYK
30, 36, 0, 87
Luminance
0.0083
Every format
| HEX | #171521 |
| RGB | rgb(23, 21, 33) |
| HSL | hsl(250, 22%, 11%) |
| CMYK | cmyk(30%, 36%, 0%, 87%) |
| LAB | lab(7.5 4.4 -8.0) |
| LCH | lch(7.5 9.1 298.9) |
| OKLCH | oklch(0.204 0.024 291.8) |
Copy-ready code
/* CSS */
color: #171521;
background-color: #171521;
/* Tailwind (arbitrary) */
class="text-[#171521] bg-[#171521]"
/* SCSS */
$brand: #171521;
/* SwiftUI */
Color(red: 0.090, green: 0.082, blue: 0.129)
/* Android */
Color.parseColor("#171521")Accessibility — WCAG contrast
Aa
#171521 on white: 18.02:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#171521 on black: 1.17:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red9.0%
Green8.2%
Blue12.9%
CMYK percentages
Cyan30.3%
Magenta36.4%
Yellow0.0%
Key (black)87.1%
Color previews
#171521 text on a black background
contrast 1.17:1
Card sample
#171521 text on a white background
contrast 18.02:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #171521;
Background color
Panel with #171521 background
background-color: #171521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #171521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(23, 21, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 21, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #171521; background: linear-gradient(135deg, #171521, #1F1521);