#66c921
a balanced, vivid green · cool · closest name: forestgreen
RGB
102, 201, 33
HSL
95°, 72%, 46%
CMYK
49, 0, 84, 21
Luminance
0.4471
Every format
| HEX | #66c921 |
| RGB | rgb(102, 201, 33) |
| HSL | hsl(95, 72%, 46%) |
| CMYK | cmyk(49%, 0%, 84%, 21%) |
| LAB | lab(72.7 -55.1 66.9) |
| LCH | lch(72.7 86.7 129.5) |
| OKLCH | oklch(0.746 0.212 136.3) |
Copy-ready code
/* CSS */
color: #66c921;
background-color: #66c921;
/* Tailwind (arbitrary) */
class="text-[#66c921] bg-[#66c921]"
/* SCSS */
$brand: #66c921;
/* SwiftUI */
Color(red: 0.400, green: 0.788, blue: 0.129)
/* Android */
Color.parseColor("#66c921")Accessibility — WCAG contrast
Aa
#66c921 on white: 2.11:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66c921 on black: 9.94:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green78.8%
Blue12.9%
CMYK percentages
Cyan49.3%
Magenta0.0%
Yellow83.6%
Key (black)21.2%
Color previews
#66c921 text on a black background
contrast 9.94:1
Card sample
#66c921 text on a white background
contrast 2.11:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66c921;
Background color
Panel with #66c921 background
background-color: #66c921;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66c921;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 201, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 201, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66c921; background: linear-gradient(135deg, #66c921, #21C94C);