#51f921
a balanced, electric green · cool · closest name: lime
RGB
81, 249, 33
HSL
107°, 95%, 55%
CMYK
68, 0, 87, 2
Luminance
0.6961
Every format
| HEX | #51f921 |
| RGB | rgb(81, 249, 33) |
| HSL | hsl(107, 95%, 55%) |
| CMYK | cmyk(68%, 0%, 87%, 2%) |
| LAB | lab(86.8 -76.3 79.0) |
| LCH | lch(86.8 109.8 134.0) |
| OKLCH | oklch(0.861 0.271 140.5) |
Copy-ready code
/* CSS */
color: #51f921;
background-color: #51f921;
/* Tailwind (arbitrary) */
class="text-[#51f921] bg-[#51f921]"
/* SCSS */
$brand: #51f921;
/* SwiftUI */
Color(red: 0.318, green: 0.976, blue: 0.129)
/* Android */
Color.parseColor("#51f921")Accessibility — WCAG contrast
Aa
#51f921 on white: 1.41:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51f921 on black: 14.92:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green97.6%
Blue12.9%
CMYK percentages
Cyan67.5%
Magenta0.0%
Yellow86.7%
Key (black)2.4%
Color previews
#51f921 text on a black background
contrast 14.92:1
Card sample
#51f921 text on a white background
contrast 1.41:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51f921;
Background color
Panel with #51f921 background
background-color: #51f921;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51f921;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 249, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 249, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51f921; background: linear-gradient(135deg, #51f921, #21F981);