#28f821
a balanced, electric green · cool · closest name: lime
RGB
40, 248, 33
HSL
118°, 94%, 55%
CMYK
84, 0, 87, 3
Luminance
0.6770
Every format
| HEX | #28f821 |
| RGB | rgb(40, 248, 33) |
| HSL | hsl(118, 94%, 55%) |
| CMYK | cmyk(84%, 0%, 87%, 3%) |
| LAB | lab(85.8 -81.6 78.0) |
| LCH | lch(85.8 112.9 136.3) |
| OKLCH | oklch(0.852 0.280 142.4) |
Copy-ready code
/* CSS */
color: #28f821;
background-color: #28f821;
/* Tailwind (arbitrary) */
class="text-[#28f821] bg-[#28f821]"
/* SCSS */
$brand: #28f821;
/* SwiftUI */
Color(red: 0.157, green: 0.973, blue: 0.129)
/* Android */
Color.parseColor("#28f821")Accessibility — WCAG contrast
Aa
#28f821 on white: 1.44:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#28f821 on black: 14.54:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green97.3%
Blue12.9%
CMYK percentages
Cyan83.9%
Magenta0.0%
Yellow86.7%
Key (black)2.7%
Color previews
#28f821 text on a black background
contrast 14.54:1
Card sample
#28f821 text on a white background
contrast 1.44:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28f821;
Background color
Panel with #28f821 background
background-color: #28f821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28f821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 248, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 248, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28f821; background: linear-gradient(135deg, #28f821, #21F8A9);