#640b21
a deep, electric red · warm · closest name: maroon
RGB
100, 11, 33
HSL
345°, 80%, 22%
CMYK
0, 89, 67, 61
Luminance
0.0306
Every format
| HEX | #640b21 |
| RGB | rgb(100, 11, 33) |
| HSL | hsl(345, 80%, 22%) |
| CMYK | cmyk(0%, 89%, 67%, 61%) |
| LAB | lab(20.3 38.8 12.3) |
| LCH | lch(20.3 40.6 17.6) |
| OKLCH | oklch(0.328 0.120 14.3) |
Copy-ready code
/* CSS */
color: #640b21;
background-color: #640b21;
/* Tailwind (arbitrary) */
class="text-[#640b21] bg-[#640b21]"
/* SCSS */
$brand: #640b21;
/* SwiftUI */
Color(red: 0.392, green: 0.043, blue: 0.129)
/* Android */
Color.parseColor("#640b21")Accessibility — WCAG contrast
Aa
#640b21 on white: 13.03:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#640b21 on black: 1.61:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red39.2%
Green4.3%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta89.0%
Yellow67.0%
Key (black)60.8%
Color previews
#640b21 text on a black background
contrast 1.61:1
Card sample
#640b21 text on a white background
contrast 13.03:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #640b21;
Background color
Panel with #640b21 background
background-color: #640b21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #640b21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(100, 11, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(100, 11, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #640b21; background: linear-gradient(135deg, #640b21, #64300B);