#666b21
a dark, vivid yellow · cool · closest name: olive
RGB
102, 107, 33
HSL
64°, 53%, 28%
CMYK
5, 0, 69, 58
Luminance
0.1345
Every format
| HEX | #666b21 |
| RGB | rgb(102, 107, 33) |
| HSL | hsl(64, 53%, 28%) |
| CMYK | cmyk(5%, 0%, 69%, 58%) |
| LAB | lab(43.4 -12.4 39.2) |
| LCH | lch(43.4 41.1 107.6) |
| OKLCH | oklch(0.508 0.096 113.1) |
Copy-ready code
/* CSS */
color: #666b21;
background-color: #666b21;
/* Tailwind (arbitrary) */
class="text-[#666b21] bg-[#666b21]"
/* SCSS */
$brand: #666b21;
/* SwiftUI */
Color(red: 0.400, green: 0.420, blue: 0.129)
/* Android */
Color.parseColor("#666b21")Accessibility — WCAG contrast
Aa
#666b21 on white: 5.69:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666b21 on black: 3.69:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.0%
Blue12.9%
CMYK percentages
Cyan4.7%
Magenta0.0%
Yellow69.2%
Key (black)58.0%
Color previews
#666b21 text on a black background
contrast 3.69:1
Card sample
#666b21 text on a white background
contrast 5.69:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666b21;
Background color
Panel with #666b21 background
background-color: #666b21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666b21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 107, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 107, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666b21; background: linear-gradient(135deg, #666b21, #356B21);