#51da21
a balanced, vivid green · cool · closest name: lime
RGB
81, 218, 33
HSL
104°, 74%, 49%
CMYK
63, 0, 85, 15
Luminance
0.5200
Every format
| HEX | #51da21 |
| RGB | rgb(81, 218, 33) |
| HSL | hsl(104, 74%, 49%) |
| CMYK | cmyk(63%, 0%, 85%, 15%) |
| LAB | lab(77.3 -66.5 70.7) |
| LCH | lch(77.3 97.0 133.2) |
| OKLCH | oklch(0.782 0.240 139.7) |
Copy-ready code
/* CSS */
color: #51da21;
background-color: #51da21;
/* Tailwind (arbitrary) */
class="text-[#51da21] bg-[#51da21]"
/* SCSS */
$brand: #51da21;
/* SwiftUI */
Color(red: 0.318, green: 0.855, blue: 0.129)
/* Android */
Color.parseColor("#51da21")Accessibility — WCAG contrast
Aa
#51da21 on white: 1.84:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51da21 on black: 11.40:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green85.5%
Blue12.9%
CMYK percentages
Cyan62.8%
Magenta0.0%
Yellow84.9%
Key (black)14.5%
Color previews
#51da21 text on a black background
contrast 11.40:1
Card sample
#51da21 text on a white background
contrast 1.84:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51da21;
Background color
Panel with #51da21 background
background-color: #51da21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51da21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 218, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 218, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51da21; background: linear-gradient(135deg, #51da21, #21DA6C);