#a91b21
a dark, vivid red · warm · closest name: firebrick
RGB
169, 27, 33
HSL
358°, 72%, 38%
CMYK
0, 84, 81, 34
Luminance
0.0933
Every format
| HEX | #a91b21 |
| RGB | rgb(169, 27, 33) |
| HSL | hsl(358, 72%, 38%) |
| CMYK | cmyk(0%, 84%, 81%, 34%) |
| LAB | lab(36.6 55.1 35.1) |
| LCH | lch(36.6 65.3 32.5) |
| OKLCH | oklch(0.475 0.176 25.6) |
Copy-ready code
/* CSS */
color: #a91b21;
background-color: #a91b21;
/* Tailwind (arbitrary) */
class="text-[#a91b21] bg-[#a91b21]"
/* SCSS */
$brand: #a91b21;
/* SwiftUI */
Color(red: 0.663, green: 0.106, blue: 0.129)
/* Android */
Color.parseColor("#a91b21")Accessibility — WCAG contrast
Aa
#a91b21 on white: 7.33:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#a91b21 on black: 2.87:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red66.3%
Green10.6%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta84.0%
Yellow80.5%
Key (black)33.7%
Color previews
#a91b21 text on a black background
contrast 2.87:1
Card sample
#a91b21 text on a white background
contrast 7.33:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #a91b21;
Background color
Panel with #a91b21 background
background-color: #a91b21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #a91b21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(169, 27, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(169, 27, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a91b21; background: linear-gradient(135deg, #a91b21, #A9741B);