#a33b21
a dark, vivid red · warm · closest name: sienna
RGB
163, 59, 33
HSL
12°, 66%, 38%
CMYK
0, 64, 80, 36
Luminance
0.1102
Every format
| HEX | #a33b21 |
| RGB | rgb(163, 59, 33) |
| HSL | hsl(12, 66%, 38%) |
| CMYK | cmyk(0%, 64%, 80%, 36%) |
| LAB | lab(39.6 41.6 37.8) |
| LCH | lch(39.6 56.2 42.2) |
| OKLCH | oklch(0.495 0.143 35.1) |
Copy-ready code
/* CSS */
color: #a33b21;
background-color: #a33b21;
/* Tailwind (arbitrary) */
class="text-[#a33b21] bg-[#a33b21]"
/* SCSS */
$brand: #a33b21;
/* SwiftUI */
Color(red: 0.639, green: 0.231, blue: 0.129)
/* Android */
Color.parseColor("#a33b21")Accessibility — WCAG contrast
Aa
#a33b21 on white: 6.55:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#a33b21 on black: 3.20:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red63.9%
Green23.1%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta63.8%
Yellow79.8%
Key (black)36.1%
Color previews
#a33b21 text on a black background
contrast 3.20:1
Card sample
#a33b21 text on a white background
contrast 6.55:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #a33b21;
Background color
Panel with #a33b21 background
background-color: #a33b21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #a33b21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(163, 59, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(163, 59, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a33b21; background: linear-gradient(135deg, #a33b21, #A39221);