#66fe21
a balanced, electric green · cool · closest name: lime
RGB
102, 254, 33
HSL
101°, 99%, 56%
CMYK
60, 0, 87, 0
Luminance
0.7382
Every format
| HEX | #66fe21 |
| RGB | rgb(102, 254, 33) |
| HSL | hsl(101, 99%, 56%) |
| CMYK | cmyk(60%, 0%, 87%, 0%) |
| LAB | lab(88.8 -73.5 81.0) |
| LCH | lch(88.8 109.4 132.2) |
| OKLCH | oklch(0.880 0.269 139.0) |
Copy-ready code
/* CSS */
color: #66fe21;
background-color: #66fe21;
/* Tailwind (arbitrary) */
class="text-[#66fe21] bg-[#66fe21]"
/* SCSS */
$brand: #66fe21;
/* SwiftUI */
Color(red: 0.400, green: 0.996, blue: 0.129)
/* Android */
Color.parseColor("#66fe21")Accessibility — WCAG contrast
Aa
#66fe21 on white: 1.33:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66fe21 on black: 15.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green99.6%
Blue12.9%
CMYK percentages
Cyan59.8%
Magenta0.0%
Yellow87.0%
Key (black)0.4%
Color previews
#66fe21 text on a black background
contrast 15.76:1
Card sample
#66fe21 text on a white background
contrast 1.33:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66fe21;
Background color
Panel with #66fe21 background
background-color: #66fe21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66fe21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 254, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 254, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66fe21; background: linear-gradient(135deg, #66fe21, #21FE70);