#40df9b
a balanced, vivid green · cool · closest name: aquamarine
RGB
64, 223, 155
HSL
154°, 71%, 56%
CMYK
71, 0, 31, 13
Luminance
0.5623
Every format
| HEX | #40df9b |
| RGB | rgb(64, 223, 155) |
| HSL | hsl(154, 71%, 56%) |
| CMYK | cmyk(71%, 0%, 31%, 13%) |
| LAB | lab(79.7 -56.3 21.8) |
| LCH | lch(79.7 60.4 158.9) |
| OKLCH | oklch(0.806 0.163 160.2) |
Copy-ready code
/* CSS */
color: #40df9b;
background-color: #40df9b;
/* Tailwind (arbitrary) */
class="text-[#40df9b] bg-[#40df9b]"
/* SCSS */
$brand: #40df9b;
/* SwiftUI */
Color(red: 0.251, green: 0.875, blue: 0.608)
/* Android */
Color.parseColor("#40df9b")Accessibility — WCAG contrast
Aa
#40df9b on white: 1.71:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#40df9b on black: 12.25:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.1%
Green87.5%
Blue60.8%
CMYK percentages
Cyan71.3%
Magenta0.0%
Yellow30.5%
Key (black)12.5%
Color previews
#40df9b text on a black background
contrast 12.25:1
Card sample
#40df9b text on a white background
contrast 1.71:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #40df9b;
Background color
Panel with #40df9b background
background-color: #40df9b;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #40df9b;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(64, 223, 155, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 223, 155, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40df9b; background: linear-gradient(135deg, #40df9b, #40B9DF);