#b53a21
a dark, vivid red · warm · closest name: firebrick
RGB
181, 58, 33
HSL
10°, 69%, 42%
CMYK
0, 68, 82, 29
Luminance
0.1296
Every format
| HEX | #b53a21 |
| RGB | rgb(181, 58, 33) |
| HSL | hsl(10, 69%, 42%) |
| CMYK | cmyk(0%, 68%, 82%, 29%) |
| LAB | lab(42.7 48.5 41.9) |
| LCH | lch(42.7 64.1 40.8) |
| OKLCH | oklch(0.525 0.164 33.3) |
Copy-ready code
/* CSS */
color: #b53a21;
background-color: #b53a21;
/* Tailwind (arbitrary) */
class="text-[#b53a21] bg-[#b53a21]"
/* SCSS */
$brand: #b53a21;
/* SwiftUI */
Color(red: 0.710, green: 0.227, blue: 0.129)
/* Android */
Color.parseColor("#b53a21")Accessibility — WCAG contrast
Aa
#b53a21 on white: 5.85:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b53a21 on black: 3.59:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red71.0%
Green22.7%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta68.0%
Yellow81.8%
Key (black)29.0%
Color previews
#b53a21 text on a black background
contrast 3.59:1
Card sample
#b53a21 text on a white background
contrast 5.85:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b53a21;
Background color
Panel with #b53a21 background
background-color: #b53a21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b53a21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(181, 58, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(181, 58, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b53a21; background: linear-gradient(135deg, #b53a21, #B59D21);