#51b521
a dark, vivid green · cool · closest name: forestgreen
RGB
81, 181, 33
HSL
101°, 69%, 42%
CMYK
55, 0, 82, 29
Luminance
0.3491
Every format
| HEX | #51b521 |
| RGB | rgb(81, 181, 33) |
| HSL | hsl(101, 69%, 42%) |
| CMYK | cmyk(55%, 0%, 82%, 29%) |
| LAB | lab(65.7 -53.7 60.3) |
| LCH | lch(65.7 80.7 131.7) |
| OKLCH | oklch(0.686 0.200 138.2) |
Copy-ready code
/* CSS */
color: #51b521;
background-color: #51b521;
/* Tailwind (arbitrary) */
class="text-[#51b521] bg-[#51b521]"
/* SCSS */
$brand: #51b521;
/* SwiftUI */
Color(red: 0.318, green: 0.710, blue: 0.129)
/* Android */
Color.parseColor("#51b521")Accessibility — WCAG contrast
Aa
#51b521 on white: 2.63:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51b521 on black: 7.98:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green71.0%
Blue12.9%
CMYK percentages
Cyan55.2%
Magenta0.0%
Yellow81.8%
Key (black)29.0%
Color previews
#51b521 text on a black background
contrast 7.98:1
Card sample
#51b521 text on a white background
contrast 2.63:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51b521;
Background color
Panel with #51b521 background
background-color: #51b521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51b521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 181, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 181, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51b521; background: linear-gradient(135deg, #51b521, #21B554);