#a33d21
a dark, vivid red · warm · closest name: sienna
RGB
163, 61, 33
HSL
13°, 66%, 38%
CMYK
0, 63, 80, 36
Luminance
0.1123
Every format
| HEX | #a33d21 |
| RGB | rgb(163, 61, 33) |
| HSL | hsl(13, 66%, 38%) |
| CMYK | cmyk(0%, 63%, 80%, 36%) |
| LAB | lab(40.0 40.7 38.1) |
| LCH | lch(40.0 55.8 43.1) |
| OKLCH | oklch(0.498 0.141 36.0) |
Copy-ready code
/* CSS */
color: #a33d21;
background-color: #a33d21;
/* Tailwind (arbitrary) */
class="text-[#a33d21] bg-[#a33d21]"
/* SCSS */
$brand: #a33d21;
/* SwiftUI */
Color(red: 0.639, green: 0.239, blue: 0.129)
/* Android */
Color.parseColor("#a33d21")Accessibility — WCAG contrast
Aa
#a33d21 on white: 6.47:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#a33d21 on black: 3.25:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red63.9%
Green23.9%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta62.6%
Yellow79.8%
Key (black)36.1%
Color previews
#a33d21 text on a black background
contrast 3.25:1
Card sample
#a33d21 text on a white background
contrast 6.47:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #a33d21;
Background color
Panel with #a33d21 background
background-color: #a33d21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #a33d21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(163, 61, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(163, 61, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a33d21; background: linear-gradient(135deg, #a33d21, #A39321);