#b31e21
a dark, vivid red · warm · “firebrick”
RGB
179, 30, 33
HSL
359°, 71%, 41%
CMYK
0, 83, 82, 30
Luminance
0.1062
Every format
| HEX | #b31e21 |
| RGB | rgb(179, 30, 33) |
| HSL | hsl(359, 71%, 41%) |
| CMYK | cmyk(0%, 83%, 82%, 30%) |
| LAB | lab(38.9 57.2 38.1) |
| LCH | lch(38.9 68.8 33.7) |
| OKLCH | oklch(0.496 0.183 26.4) |
Copy-ready code
/* CSS */
color: #b31e21;
background-color: #b31e21;
/* Tailwind (arbitrary) */
class="text-[#b31e21] bg-[#b31e21]"
/* SCSS */
$brand: #b31e21;
/* SwiftUI */
Color(red: 0.702, green: 0.118, blue: 0.129)
/* Android */
Color.parseColor("#b31e21")Accessibility — WCAG contrast
Aa
#b31e21 on white: 6.72:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b31e21 on black: 3.12:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red70.2%
Green11.8%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta83.2%
Yellow81.6%
Key (black)29.8%
Color previews
#b31e21 text on a black background
contrast 3.12:1
Card sample
#b31e21 text on a white background
contrast 6.72:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b31e21;
Background color
Panel with #b31e21 background
background-color: #b31e21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b31e21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(179, 30, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(179, 30, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b31e21; background: linear-gradient(135deg, #b31e21, #B37E1E);