#66b821
a dark, vivid green · cool · closest name: forestgreen
RGB
102, 184, 33
HSL
93°, 70%, 43%
CMYK
45, 0, 82, 28
Luminance
0.3722
Every format
| HEX | #66b821 |
| RGB | rgb(102, 184, 33) |
| HSL | hsl(93, 70%, 43%) |
| CMYK | cmyk(45%, 0%, 82%, 28%) |
| LAB | lab(67.4 -48.5 62.2) |
| LCH | lch(67.4 78.9 128.0) |
| OKLCH | oklch(0.703 0.193 134.9) |
Copy-ready code
/* CSS */
color: #66b821;
background-color: #66b821;
/* Tailwind (arbitrary) */
class="text-[#66b821] bg-[#66b821]"
/* SCSS */
$brand: #66b821;
/* SwiftUI */
Color(red: 0.400, green: 0.722, blue: 0.129)
/* Android */
Color.parseColor("#66b821")Accessibility — WCAG contrast
Aa
#66b821 on white: 2.49:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66b821 on black: 8.44:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green72.2%
Blue12.9%
CMYK percentages
Cyan44.6%
Magenta0.0%
Yellow82.1%
Key (black)27.8%
Color previews
#66b821 text on a black background
contrast 8.44:1
Card sample
#66b821 text on a white background
contrast 2.49:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66b821;
Background color
Panel with #66b821 background
background-color: #66b821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66b821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 184, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 184, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66b821; background: linear-gradient(135deg, #66b821, #21B841);