#663333
a dark, soft red · warm · closest name: sienna
RGB
102, 51, 51
HSL
0°, 33%, 30%
CMYK
0, 50, 50, 60
Luminance
0.0543
Every format
| HEX | #663333 |
| RGB | rgb(102, 51, 51) |
| HSL | hsl(0, 33%, 30%) |
| CMYK | cmyk(0%, 50%, 50%, 60%) |
| LAB | lab(27.9 22.8 10.4) |
| LCH | lch(27.9 25.1 24.5) |
| OKLCH | oklch(0.388 0.073 21.0) |
Copy-ready code
/* CSS */
color: #663333;
background-color: #663333;
/* Tailwind (arbitrary) */
class="text-[#663333] bg-[#663333]"
/* SCSS */
$brand: #663333;
/* SwiftUI */
Color(red: 0.400, green: 0.200, blue: 0.200)
/* Android */
Color.parseColor("#663333")Accessibility — WCAG contrast
Aa
#663333 on white: 10.07:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#663333 on black: 2.09:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green20.0%
Blue20.0%
CMYK percentages
Cyan0.0%
Magenta50.0%
Yellow50.0%
Key (black)60.0%
Color previews
#663333 text on a black background
contrast 2.09:1
Card sample
#663333 text on a white background
contrast 10.07:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #663333;
Background color
Panel with #663333 background
background-color: #663333;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #663333;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 51, 51, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 51, 51, 0.45);
Border & gradient
Gradient panel
border: 3px solid #663333; background: linear-gradient(135deg, #663333, #665533);