#51fd21
a balanced, electric green · cool · closest name: lime
RGB
81, 253, 33
HSL
107°, 98%, 56%
CMYK
68, 0, 87, 1
Luminance
0.7211
Every format
| HEX | #51fd21 |
| RGB | rgb(81, 253, 33) |
| HSL | hsl(107, 98%, 56%) |
| CMYK | cmyk(68%, 0%, 87%, 1%) |
| LAB | lab(88.0 -77.5 80.1) |
| LCH | lch(88.0 111.4 134.1) |
| OKLCH | oklch(0.871 0.275 140.5) |
Copy-ready code
/* CSS */
color: #51fd21;
background-color: #51fd21;
/* Tailwind (arbitrary) */
class="text-[#51fd21] bg-[#51fd21]"
/* SCSS */
$brand: #51fd21;
/* SwiftUI */
Color(red: 0.318, green: 0.992, blue: 0.129)
/* Android */
Color.parseColor("#51fd21")Accessibility — WCAG contrast
Aa
#51fd21 on white: 1.36:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51fd21 on black: 15.42:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green99.2%
Blue12.9%
CMYK percentages
Cyan68.0%
Magenta0.0%
Yellow87.0%
Key (black)0.8%
Color previews
#51fd21 text on a black background
contrast 15.42:1
Card sample
#51fd21 text on a white background
contrast 1.36:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51fd21;
Background color
Panel with #51fd21 background
background-color: #51fd21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51fd21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 253, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 253, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51fd21; background: linear-gradient(135deg, #51fd21, #21FD84);