#b71521
a dark, electric red · warm · closest name: firebrick
RGB
183, 21, 33
HSL
356°, 79%, 40%
CMYK
0, 89, 82, 28
Luminance
0.1071
Every format
| HEX | #b71521 |
| RGB | rgb(183, 21, 33) |
| HSL | hsl(356, 79%, 40%) |
| CMYK | cmyk(0%, 89%, 82%, 28%) |
| LAB | lab(39.1 60.3 38.5) |
| LCH | lch(39.1 71.5 32.6) |
| OKLCH | oklch(0.498 0.192 25.4) |
Copy-ready code
/* CSS */
color: #b71521;
background-color: #b71521;
/* Tailwind (arbitrary) */
class="text-[#b71521] bg-[#b71521]"
/* SCSS */
$brand: #b71521;
/* SwiftUI */
Color(red: 0.718, green: 0.082, blue: 0.129)
/* Android */
Color.parseColor("#b71521")Accessibility — WCAG contrast
Aa
#b71521 on white: 6.68:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b71521 on black: 3.14:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red71.8%
Green8.2%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta88.5%
Yellow82.0%
Key (black)28.2%
Color previews
#b71521 text on a black background
contrast 3.14:1
Card sample
#b71521 text on a white background
contrast 6.68:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b71521;
Background color
Panel with #b71521 background
background-color: #b71521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b71521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(183, 21, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(183, 21, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b71521; background: linear-gradient(135deg, #b71521, #B77515);