#666d21
a dark, vivid yellow · cool · closest name: olive
RGB
102, 109, 33
HSL
66°, 54%, 28%
CMYK
6, 0, 70, 57
Luminance
0.1387
Every format
| HEX | #666d21 |
| RGB | rgb(102, 109, 33) |
| HSL | hsl(66, 54%, 28%) |
| CMYK | cmyk(6%, 0%, 70%, 57%) |
| LAB | lab(44.0 -13.5 39.8) |
| LCH | lch(44.0 42.0 108.8) |
| OKLCH | oklch(0.513 0.099 114.4) |
Copy-ready code
/* CSS */
color: #666d21;
background-color: #666d21;
/* Tailwind (arbitrary) */
class="text-[#666d21] bg-[#666d21]"
/* SCSS */
$brand: #666d21;
/* SwiftUI */
Color(red: 0.400, green: 0.427, blue: 0.129)
/* Android */
Color.parseColor("#666d21")Accessibility — WCAG contrast
Aa
#666d21 on white: 5.56:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666d21 on black: 3.77:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.7%
Blue12.9%
CMYK percentages
Cyan6.4%
Magenta0.0%
Yellow69.7%
Key (black)57.3%
Color previews
#666d21 text on a black background
contrast 3.77:1
Card sample
#666d21 text on a white background
contrast 5.56:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666d21;
Background color
Panel with #666d21 background
background-color: #666d21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666d21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 109, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 109, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666d21; background: linear-gradient(135deg, #666d21, #336D21);