#42df21
a balanced, vivid green · cool · closest name: lime
RGB
66, 223, 33
HSL
110°, 75%, 50%
CMYK
70, 0, 85, 13
Luminance
0.5404
Every format
| HEX | #42df21 |
| RGB | rgb(66, 223, 33) |
| HSL | hsl(110, 75%, 50%) |
| CMYK | cmyk(70%, 0%, 85%, 13%) |
| LAB | lab(78.5 -71.0 71.6) |
| LCH | lch(78.5 100.9 134.8) |
| OKLCH | oklch(0.791 0.250 141.0) |
Copy-ready code
/* CSS */
color: #42df21;
background-color: #42df21;
/* Tailwind (arbitrary) */
class="text-[#42df21] bg-[#42df21]"
/* SCSS */
$brand: #42df21;
/* SwiftUI */
Color(red: 0.259, green: 0.875, blue: 0.129)
/* Android */
Color.parseColor("#42df21")Accessibility — WCAG contrast
Aa
#42df21 on white: 1.78:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42df21 on black: 11.81:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green87.5%
Blue12.9%
CMYK percentages
Cyan70.4%
Magenta0.0%
Yellow85.2%
Key (black)12.5%
Color previews
#42df21 text on a black background
contrast 11.81:1
Card sample
#42df21 text on a white background
contrast 1.78:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42df21;
Background color
Panel with #42df21 background
background-color: #42df21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42df21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 223, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 223, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42df21; background: linear-gradient(135deg, #42df21, #21DF7F);