#66d521
a balanced, vivid green · cool · closest name: lime
RGB
102, 213, 33
HSL
97°, 73%, 48%
CMYK
52, 0, 85, 17
Luminance
0.5052
Every format
| HEX | #66d521 |
| RGB | rgb(102, 213, 33) |
| HSL | hsl(97, 73%, 48%) |
| CMYK | cmyk(52%, 0%, 85%, 17%) |
| LAB | lab(76.4 -59.5 70.2) |
| LCH | lch(76.4 92.0 130.3) |
| OKLCH | oklch(0.777 0.226 137.1) |
Copy-ready code
/* CSS */
color: #66d521;
background-color: #66d521;
/* Tailwind (arbitrary) */
class="text-[#66d521] bg-[#66d521]"
/* SCSS */
$brand: #66d521;
/* SwiftUI */
Color(red: 0.400, green: 0.835, blue: 0.129)
/* Android */
Color.parseColor("#66d521")Accessibility — WCAG contrast
Aa
#66d521 on white: 1.89:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66d521 on black: 11.10:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green83.5%
Blue12.9%
CMYK percentages
Cyan52.1%
Magenta0.0%
Yellow84.5%
Key (black)16.5%
Color previews
#66d521 text on a black background
contrast 11.10:1
Card sample
#66d521 text on a white background
contrast 1.89:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66d521;
Background color
Panel with #66d521 background
background-color: #66d521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66d521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 213, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 213, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66d521; background: linear-gradient(135deg, #66d521, #21D554);