#51a721
a dark, vivid green · cool · closest name: forestgreen
RGB
81, 167, 33
HSL
99°, 67%, 39%
CMYK
52, 0, 80, 35
Luminance
0.2950
Every format
| HEX | #51a721 |
| RGB | rgb(81, 167, 33) |
| HSL | hsl(99, 67%, 39%) |
| CMYK | cmyk(52%, 0%, 80%, 35%) |
| LAB | lab(61.2 -48.5 56.1) |
| LCH | lch(61.2 74.2 130.8) |
| OKLCH | oklch(0.650 0.183 137.2) |
Copy-ready code
/* CSS */
color: #51a721;
background-color: #51a721;
/* Tailwind (arbitrary) */
class="text-[#51a721] bg-[#51a721]"
/* SCSS */
$brand: #51a721;
/* SwiftUI */
Color(red: 0.318, green: 0.655, blue: 0.129)
/* Android */
Color.parseColor("#51a721")Accessibility — WCAG contrast
Aa
#51a721 on white: 3.04:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#51a721 on black: 6.90:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green65.5%
Blue12.9%
CMYK percentages
Cyan51.5%
Magenta0.0%
Yellow80.2%
Key (black)34.5%
Color previews
#51a721 text on a black background
contrast 6.90:1
Card sample
#51a721 text on a white background
contrast 3.04:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51a721;
Background color
Panel with #51a721 background
background-color: #51a721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51a721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 167, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 167, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51a721; background: linear-gradient(135deg, #51a721, #21A74A);