#660a21
a deep, electric red · warm · closest name: maroon
RGB
102, 10, 33
HSL
345°, 82%, 22%
CMYK
0, 90, 68, 60
Luminance
0.0315
Every format
| HEX | #660a21 |
| RGB | rgb(102, 10, 33) |
| HSL | hsl(345, 82%, 22%) |
| CMYK | cmyk(0%, 90%, 68%, 60%) |
| LAB | lab(20.6 39.6 12.8) |
| LCH | lch(20.6 41.6 17.9) |
| OKLCH | oklch(0.332 0.123 14.6) |
Copy-ready code
/* CSS */
color: #660a21;
background-color: #660a21;
/* Tailwind (arbitrary) */
class="text-[#660a21] bg-[#660a21]"
/* SCSS */
$brand: #660a21;
/* SwiftUI */
Color(red: 0.400, green: 0.039, blue: 0.129)
/* Android */
Color.parseColor("#660a21")Accessibility — WCAG contrast
Aa
#660a21 on white: 12.88:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#660a21 on black: 1.63:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green3.9%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta90.2%
Yellow67.6%
Key (black)60.0%
Color previews
#660a21 text on a black background
contrast 1.63:1
Card sample
#660a21 text on a white background
contrast 12.88:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #660a21;
Background color
Panel with #660a21 background
background-color: #660a21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #660a21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 10, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 10, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #660a21; background: linear-gradient(135deg, #660a21, #66300A);