#51d821
a balanced, vivid green · cool · closest name: lime
RGB
81, 216, 33
HSL
104°, 74%, 49%
CMYK
63, 0, 85, 15
Luminance
0.5097
Every format
| HEX | #51d821 |
| RGB | rgb(81, 216, 33) |
| HSL | hsl(104, 74%, 49%) |
| CMYK | cmyk(63%, 0%, 85%, 15%) |
| LAB | lab(76.7 -65.8 70.2) |
| LCH | lch(76.7 96.2 133.2) |
| OKLCH | oklch(0.777 0.238 139.6) |
Copy-ready code
/* CSS */
color: #51d821;
background-color: #51d821;
/* Tailwind (arbitrary) */
class="text-[#51d821] bg-[#51d821]"
/* SCSS */
$brand: #51d821;
/* SwiftUI */
Color(red: 0.318, green: 0.847, blue: 0.129)
/* Android */
Color.parseColor("#51d821")Accessibility — WCAG contrast
Aa
#51d821 on white: 1.88:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51d821 on black: 11.19:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green84.7%
Blue12.9%
CMYK percentages
Cyan62.5%
Magenta0.0%
Yellow84.7%
Key (black)15.3%
Color previews
#51d821 text on a black background
contrast 11.19:1
Card sample
#51d821 text on a white background
contrast 1.88:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51d821;
Background color
Panel with #51d821 background
background-color: #51d821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51d821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 216, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 216, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51d821; background: linear-gradient(135deg, #51d821, #21D86B);