#21df4b
a balanced, vivid green · cool · closest name: lime
RGB
33, 223, 75
HSL
133°, 75%, 50%
CMYK
85, 0, 66, 13
Luminance
0.5361
Every format
| HEX | #21df4b |
| RGB | rgb(33, 223, 75) |
| HSL | hsl(133, 75%, 50%) |
| CMYK | cmyk(85%, 0%, 66%, 13%) |
| LAB | lab(78.2 -72.3 58.0) |
| LCH | lch(78.2 92.7 141.3) |
| OKLCH | oklch(0.789 0.236 145.5) |
Copy-ready code
/* CSS */
color: #21df4b;
background-color: #21df4b;
/* Tailwind (arbitrary) */
class="text-[#21df4b] bg-[#21df4b]"
/* SCSS */
$brand: #21df4b;
/* SwiftUI */
Color(red: 0.129, green: 0.875, blue: 0.294)
/* Android */
Color.parseColor("#21df4b")Accessibility — WCAG contrast
Aa
#21df4b on white: 1.79:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21df4b on black: 11.72:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green87.5%
Blue29.4%
CMYK percentages
Cyan85.2%
Magenta0.0%
Yellow66.4%
Key (black)12.5%
Color previews
#21df4b text on a black background
contrast 11.72:1
Card sample
#21df4b text on a white background
contrast 1.79:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21df4b;
Background color
Panel with #21df4b background
background-color: #21df4b;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21df4b;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 223, 75, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 223, 75, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21df4b; background: linear-gradient(135deg, #21df4b, #21DFCA);