#51fb21
a balanced, electric green · cool · closest name: lime
RGB
81, 251, 33
HSL
107°, 97%, 56%
CMYK
68, 0, 87, 2
Luminance
0.7085
Every format
| HEX | #51fb21 |
| RGB | rgb(81, 251, 33) |
| HSL | hsl(107, 97%, 56%) |
| CMYK | cmyk(68%, 0%, 87%, 2%) |
| LAB | lab(87.4 -76.9 79.6) |
| LCH | lch(87.4 110.6 134.0) |
| OKLCH | oklch(0.866 0.273 140.5) |
Copy-ready code
/* CSS */
color: #51fb21;
background-color: #51fb21;
/* Tailwind (arbitrary) */
class="text-[#51fb21] bg-[#51fb21]"
/* SCSS */
$brand: #51fb21;
/* SwiftUI */
Color(red: 0.318, green: 0.984, blue: 0.129)
/* Android */
Color.parseColor("#51fb21")Accessibility — WCAG contrast
Aa
#51fb21 on white: 1.38:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51fb21 on black: 15.17:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green98.4%
Blue12.9%
CMYK percentages
Cyan67.7%
Magenta0.0%
Yellow86.9%
Key (black)1.6%
Color previews
#51fb21 text on a black background
contrast 15.17:1
Card sample
#51fb21 text on a white background
contrast 1.38:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51fb21;
Background color
Panel with #51fb21 background
background-color: #51fb21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51fb21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 251, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 251, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51fb21; background: linear-gradient(135deg, #51fb21, #21FB82);