#ad1f21
a dark, vivid red · warm · “firebrick”
RGB
173, 31, 33
HSL
359°, 70%, 40%
CMYK
0, 82, 81, 32
Luminance
0.0997
Every format
| HEX | #ad1f21 |
| RGB | rgb(173, 31, 33) |
| HSL | hsl(359, 70%, 40%) |
| CMYK | cmyk(0%, 82%, 81%, 32%) |
| LAB | lab(37.8 55.2 36.6) |
| LCH | lch(37.8 66.2 33.5) |
| OKLCH | oklch(0.485 0.177 26.4) |
Copy-ready code
/* CSS */
color: #ad1f21;
background-color: #ad1f21;
/* Tailwind (arbitrary) */
class="text-[#ad1f21] bg-[#ad1f21]"
/* SCSS */
$brand: #ad1f21;
/* SwiftUI */
Color(red: 0.678, green: 0.122, blue: 0.129)
/* Android */
Color.parseColor("#ad1f21")Accessibility — WCAG contrast
Aa
#ad1f21 on white: 7.01:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#ad1f21 on black: 2.99:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red67.8%
Green12.2%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta82.1%
Yellow80.9%
Key (black)32.2%
Color previews
#ad1f21 text on a black background
contrast 2.99:1
Card sample
#ad1f21 text on a white background
contrast 7.01:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ad1f21;
Background color
Panel with #ad1f21 background
background-color: #ad1f21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ad1f21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(173, 31, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(173, 31, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ad1f21; background: linear-gradient(135deg, #ad1f21, #AD7C1F);