#ac3a21
a dark, vivid red · warm · closest name: firebrick
RGB
172, 58, 33
HSL
11°, 68%, 40%
CMYK
0, 66, 81, 33
Luminance
0.1191
Every format
| HEX | #ac3a21 |
| RGB | rgb(172, 58, 33) |
| HSL | hsl(11, 68%, 40%) |
| CMYK | cmyk(0%, 66%, 81%, 33%) |
| LAB | lab(41.1 45.3 39.7) |
| LCH | lch(41.1 60.3 41.2) |
| OKLCH | oklch(0.509 0.154 33.9) |
Copy-ready code
/* CSS */
color: #ac3a21;
background-color: #ac3a21;
/* Tailwind (arbitrary) */
class="text-[#ac3a21] bg-[#ac3a21]"
/* SCSS */
$brand: #ac3a21;
/* SwiftUI */
Color(red: 0.675, green: 0.227, blue: 0.129)
/* Android */
Color.parseColor("#ac3a21")Accessibility — WCAG contrast
Aa
#ac3a21 on white: 6.21:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#ac3a21 on black: 3.38:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red67.5%
Green22.7%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta66.3%
Yellow80.8%
Key (black)32.5%
Color previews
#ac3a21 text on a black background
contrast 3.38:1
Card sample
#ac3a21 text on a white background
contrast 6.21:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ac3a21;
Background color
Panel with #ac3a21 background
background-color: #ac3a21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ac3a21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(172, 58, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 58, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ac3a21; background: linear-gradient(135deg, #ac3a21, #AC9721);