#b31c21
a dark, vivid red · warm · “firebrick”
RGB
179, 28, 33
HSL
358°, 73%, 41%
CMYK
0, 84, 82, 30
Luminance
0.1052
Every format
| HEX | #b31c21 |
| RGB | rgb(179, 28, 33) |
| HSL | hsl(358, 73%, 41%) |
| CMYK | cmyk(0%, 84%, 82%, 30%) |
| LAB | lab(38.8 57.7 37.9) |
| LCH | lch(38.8 69.1 33.3) |
| OKLCH | oklch(0.494 0.184 26.1) |
Copy-ready code
/* CSS */
color: #b31c21;
background-color: #b31c21;
/* Tailwind (arbitrary) */
class="text-[#b31c21] bg-[#b31c21]"
/* SCSS */
$brand: #b31c21;
/* SwiftUI */
Color(red: 0.702, green: 0.110, blue: 0.129)
/* Android */
Color.parseColor("#b31c21")Accessibility — WCAG contrast
Aa
#b31c21 on white: 6.76:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b31c21 on black: 3.10:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red70.2%
Green11.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta84.4%
Yellow81.6%
Key (black)29.8%
Color previews
#b31c21 text on a black background
contrast 3.10:1
Card sample
#b31c21 text on a white background
contrast 6.76:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b31c21;
Background color
Panel with #b31c21 background
background-color: #b31c21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b31c21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(179, 28, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(179, 28, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b31c21; background: linear-gradient(135deg, #b31c21, #B37C1C);