#51e821
a balanced, electric green · cool · closest name: lime
RGB
81, 232, 33
HSL
106°, 81%, 52%
CMYK
65, 0, 86, 9
Luminance
0.5957
Every format
| HEX | #51e821 |
| RGB | rgb(81, 232, 33) |
| HSL | hsl(106, 81%, 52%) |
| CMYK | cmyk(65%, 0%, 86%, 9%) |
| LAB | lab(81.6 -71.0 74.5) |
| LCH | lch(81.6 102.9 133.6) |
| OKLCH | oklch(0.818 0.254 140.1) |
Copy-ready code
/* CSS */
color: #51e821;
background-color: #51e821;
/* Tailwind (arbitrary) */
class="text-[#51e821] bg-[#51e821]"
/* SCSS */
$brand: #51e821;
/* SwiftUI */
Color(red: 0.318, green: 0.910, blue: 0.129)
/* Android */
Color.parseColor("#51e821")Accessibility — WCAG contrast
Aa
#51e821 on white: 1.63:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51e821 on black: 12.91:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green91.0%
Blue12.9%
CMYK percentages
Cyan65.1%
Magenta0.0%
Yellow85.8%
Key (black)9.0%
Color previews
#51e821 text on a black background
contrast 12.91:1
Card sample
#51e821 text on a white background
contrast 1.63:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51e821;
Background color
Panel with #51e821 background
background-color: #51e821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51e821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 232, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 232, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51e821; background: linear-gradient(135deg, #51e821, #21E876);