#21df3f
a balanced, vivid green · cool · closest name: lime
RGB
33, 223, 63
HSL
130°, 75%, 50%
CMYK
85, 0, 72, 13
Luminance
0.5346
Every format
| HEX | #21df3f |
| RGB | rgb(33, 223, 63) |
| HSL | hsl(130, 75%, 50%) |
| CMYK | cmyk(85%, 0%, 72%, 13%) |
| LAB | lab(78.1 -73.5 62.5) |
| LCH | lch(78.1 96.4 139.6) |
| OKLCH | oklch(0.787 0.244 144.4) |
Copy-ready code
/* CSS */
color: #21df3f;
background-color: #21df3f;
/* Tailwind (arbitrary) */
class="text-[#21df3f] bg-[#21df3f]"
/* SCSS */
$brand: #21df3f;
/* SwiftUI */
Color(red: 0.129, green: 0.875, blue: 0.247)
/* Android */
Color.parseColor("#21df3f")Accessibility — WCAG contrast
Aa
#21df3f on white: 1.80:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21df3f on black: 11.69:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green87.5%
Blue24.7%
CMYK percentages
Cyan85.2%
Magenta0.0%
Yellow71.7%
Key (black)12.5%
Color previews
#21df3f text on a black background
contrast 11.69:1
Card sample
#21df3f text on a white background
contrast 1.80:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21df3f;
Background color
Panel with #21df3f background
background-color: #21df3f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21df3f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 223, 63, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 223, 63, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21df3f; background: linear-gradient(135deg, #21df3f, #21DFBE);