#42df9f
a balanced, vivid green · cool · closest name: aquamarine
RGB
66, 223, 159
HSL
156°, 71%, 57%
CMYK
70, 0, 29, 13
Luminance
0.5644
Every format
| HEX | #42df9f |
| RGB | rgb(66, 223, 159) |
| HSL | hsl(156, 71%, 57%) |
| CMYK | cmyk(70%, 0%, 29%, 13%) |
| LAB | lab(79.9 -55.2 19.9) |
| LCH | lch(79.9 58.6 160.2) |
| OKLCH | oklch(0.807 0.159 161.5) |
Copy-ready code
/* CSS */
color: #42df9f;
background-color: #42df9f;
/* Tailwind (arbitrary) */
class="text-[#42df9f] bg-[#42df9f]"
/* SCSS */
$brand: #42df9f;
/* SwiftUI */
Color(red: 0.259, green: 0.875, blue: 0.624)
/* Android */
Color.parseColor("#42df9f")Accessibility — WCAG contrast
Aa
#42df9f on white: 1.71:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42df9f on black: 12.29:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green87.5%
Blue62.4%
CMYK percentages
Cyan70.4%
Magenta0.0%
Yellow28.7%
Key (black)12.5%
Color previews
#42df9f text on a black background
contrast 12.29:1
Card sample
#42df9f text on a white background
contrast 1.71:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42df9f;
Background color
Panel with #42df9f background
background-color: #42df9f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42df9f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 223, 159, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 223, 159, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42df9f; background: linear-gradient(135deg, #42df9f, #42B6DF);