#51f821
a balanced, electric green · cool · closest name: lime
RGB
81, 248, 33
HSL
107°, 94%, 55%
CMYK
67, 0, 87, 3
Luminance
0.6899
Every format
| HEX | #51f821 |
| RGB | rgb(81, 248, 33) |
| HSL | hsl(107, 94%, 55%) |
| CMYK | cmyk(67%, 0%, 87%, 3%) |
| LAB | lab(86.5 -76.0 78.8) |
| LCH | lch(86.5 109.4 134.0) |
| OKLCH | oklch(0.859 0.270 140.4) |
Copy-ready code
/* CSS */
color: #51f821;
background-color: #51f821;
/* Tailwind (arbitrary) */
class="text-[#51f821] bg-[#51f821]"
/* SCSS */
$brand: #51f821;
/* SwiftUI */
Color(red: 0.318, green: 0.973, blue: 0.129)
/* Android */
Color.parseColor("#51f821")Accessibility — WCAG contrast
Aa
#51f821 on white: 1.42:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51f821 on black: 14.80:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green97.3%
Blue12.9%
CMYK percentages
Cyan67.3%
Magenta0.0%
Yellow86.7%
Key (black)2.7%
Color previews
#51f821 text on a black background
contrast 14.80:1
Card sample
#51f821 text on a white background
contrast 1.42:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51f821;
Background color
Panel with #51f821 background
background-color: #51f821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51f821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 248, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 248, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51f821; background: linear-gradient(135deg, #51f821, #21F880);