#b31921
a dark, electric red · warm · closest name: firebrick
RGB
179, 25, 33
HSL
357°, 76%, 40%
CMYK
0, 86, 82, 30
Luminance
0.1039
Every format
| HEX | #b31921 |
| RGB | rgb(179, 25, 33) |
| HSL | hsl(357, 76%, 40%) |
| CMYK | cmyk(0%, 86%, 82%, 30%) |
| LAB | lab(38.5 58.4 37.7) |
| LCH | lch(38.5 69.5 32.9) |
| OKLCH | oklch(0.493 0.186 25.7) |
Copy-ready code
/* CSS */
color: #b31921;
background-color: #b31921;
/* Tailwind (arbitrary) */
class="text-[#b31921] bg-[#b31921]"
/* SCSS */
$brand: #b31921;
/* SwiftUI */
Color(red: 0.702, green: 0.098, blue: 0.129)
/* Android */
Color.parseColor("#b31921")Accessibility — WCAG contrast
Aa
#b31921 on white: 6.82:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b31921 on black: 3.08:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red70.2%
Green9.8%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta86.0%
Yellow81.6%
Key (black)29.8%
Color previews
#b31921 text on a black background
contrast 3.08:1
Card sample
#b31921 text on a white background
contrast 6.82:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b31921;
Background color
Panel with #b31921 background
background-color: #b31921;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b31921;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(179, 25, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(179, 25, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b31921; background: linear-gradient(135deg, #b31921, #B37819);