#66c721
a balanced, vivid green · cool · closest name: forestgreen
RGB
102, 199, 33
HSL
95°, 72%, 46%
CMYK
49, 0, 83, 22
Luminance
0.4378
Every format
| HEX | #66c721 |
| RGB | rgb(102, 199, 33) |
| HSL | hsl(95, 72%, 46%) |
| CMYK | cmyk(49%, 0%, 83%, 22%) |
| LAB | lab(72.1 -54.4 66.3) |
| LCH | lch(72.1 85.8 129.3) |
| OKLCH | oklch(0.741 0.210 136.2) |
Copy-ready code
/* CSS */
color: #66c721;
background-color: #66c721;
/* Tailwind (arbitrary) */
class="text-[#66c721] bg-[#66c721]"
/* SCSS */
$brand: #66c721;
/* SwiftUI */
Color(red: 0.400, green: 0.780, blue: 0.129)
/* Android */
Color.parseColor("#66c721")Accessibility — WCAG contrast
Aa
#66c721 on white: 2.15:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66c721 on black: 9.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green78.0%
Blue12.9%
CMYK percentages
Cyan48.7%
Magenta0.0%
Yellow83.4%
Key (black)22.0%
Color previews
#66c721 text on a black background
contrast 9.76:1
Card sample
#66c721 text on a white background
contrast 2.15:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66c721;
Background color
Panel with #66c721 background
background-color: #66c721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66c721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 199, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 199, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66c721; background: linear-gradient(135deg, #66c721, #21C74B);