#b10721
a dark, electric red · warm · closest name: firebrick
RGB
177, 7, 33
HSL
351°, 92%, 36%
CMYK
0, 96, 81, 31
Luminance
0.0961
Every format
| HEX | #b10721 |
| RGB | rgb(177, 7, 33) |
| HSL | hsl(351, 92%, 36%) |
| CMYK | cmyk(0%, 96%, 81%, 31%) |
| LAB | lab(37.1 60.6 36.2) |
| LCH | lch(37.1 70.6 30.8) |
| OKLCH | oklch(0.482 0.192 23.9) |
Copy-ready code
/* CSS */
color: #b10721;
background-color: #b10721;
/* Tailwind (arbitrary) */
class="text-[#b10721] bg-[#b10721]"
/* SCSS */
$brand: #b10721;
/* SwiftUI */
Color(red: 0.694, green: 0.027, blue: 0.129)
/* Android */
Color.parseColor("#b10721")Accessibility — WCAG contrast
Aa
#b10721 on white: 7.19:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#b10721 on black: 2.92:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red69.4%
Green2.7%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta96.0%
Yellow81.4%
Key (black)30.6%
Color previews
#b10721 text on a black background
contrast 2.92:1
Card sample
#b10721 text on a white background
contrast 7.19:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b10721;
Background color
Panel with #b10721 background
background-color: #b10721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b10721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(177, 7, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(177, 7, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b10721; background: linear-gradient(135deg, #b10721, #B15E07);