#66dd00
a dark, electric green · cool · closest name: lime
RGB
102, 221, 0
HSL
92°, 100%, 43%
CMYK
54, 0, 100, 13
Luminance
0.5454
Every format
| HEX | #66dd00 |
| RGB | rgb(102, 221, 0) |
| HSL | hsl(92, 100%, 43%) |
| CMYK | cmyk(54%, 0%, 100%, 13%) |
| LAB | lab(78.8 -63.1 76.7) |
| LCH | lch(78.8 99.3 129.4) |
| OKLCH | oklch(0.796 0.241 136.9) |
Copy-ready code
/* CSS */
color: #66dd00;
background-color: #66dd00;
/* Tailwind (arbitrary) */
class="text-[#66dd00] bg-[#66dd00]"
/* SCSS */
$brand: #66dd00;
/* SwiftUI */
Color(red: 0.400, green: 0.867, blue: 0.000)
/* Android */
Color.parseColor("#66dd00")Accessibility — WCAG contrast
Aa
#66dd00 on white: 1.76:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66dd00 on black: 11.91:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green86.7%
Blue0.0%
CMYK percentages
Cyan53.8%
Magenta0.0%
Yellow100.0%
Key (black)13.3%
Color previews
#66dd00 text on a black background
contrast 11.91:1
Card sample
#66dd00 text on a white background
contrast 1.76:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66dd00;
Background color
Panel with #66dd00 background
background-color: #66dd00;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66dd00;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 221, 0, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 221, 0, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66dd00; background: linear-gradient(135deg, #66dd00, #00DD2D);