#51d721
a balanced, vivid green · cool · closest name: lime
RGB
81, 215, 33
HSL
104°, 73%, 49%
CMYK
62, 0, 85, 16
Luminance
0.5046
Every format
| HEX | #51d721 |
| RGB | rgb(81, 215, 33) |
| HSL | hsl(104, 73%, 49%) |
| CMYK | cmyk(62%, 0%, 85%, 16%) |
| LAB | lab(76.3 -65.5 69.9) |
| LCH | lch(76.3 95.8 133.1) |
| OKLCH | oklch(0.775 0.237 139.6) |
Copy-ready code
/* CSS */
color: #51d721;
background-color: #51d721;
/* Tailwind (arbitrary) */
class="text-[#51d721] bg-[#51d721]"
/* SCSS */
$brand: #51d721;
/* SwiftUI */
Color(red: 0.318, green: 0.843, blue: 0.129)
/* Android */
Color.parseColor("#51d721")Accessibility — WCAG contrast
Aa
#51d721 on white: 1.89:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51d721 on black: 11.09:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green84.3%
Blue12.9%
CMYK percentages
Cyan62.3%
Magenta0.0%
Yellow84.7%
Key (black)15.7%
Color previews
#51d721 text on a black background
contrast 11.09:1
Card sample
#51d721 text on a white background
contrast 1.89:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51d721;
Background color
Panel with #51d721 background
background-color: #51d721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51d721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 215, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 215, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51d721; background: linear-gradient(135deg, #51d721, #21D76A);