#42e9da
a balanced, electric cyan · cool · closest name: turquoise
RGB
66, 233, 218
HSL
175°, 79%, 59%
CMYK
72, 0, 6, 9
Luminance
0.6450
Every format
| HEX | #42e9da |
| RGB | rgb(66, 233, 218) |
| HSL | hsl(175, 79%, 59%) |
| CMYK | cmyk(72%, 0%, 6%, 9%) |
| LAB | lab(84.2 -45.1 -5.0) |
| LCH | lch(84.2 45.4 186.3) |
| OKLCH | oklch(0.847 0.135 186.0) |
Copy-ready code
/* CSS */
color: #42e9da;
background-color: #42e9da;
/* Tailwind (arbitrary) */
class="text-[#42e9da] bg-[#42e9da]"
/* SCSS */
$brand: #42e9da;
/* SwiftUI */
Color(red: 0.259, green: 0.914, blue: 0.855)
/* Android */
Color.parseColor("#42e9da")Accessibility — WCAG contrast
Aa
#42e9da on white: 1.51:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42e9da on black: 13.90:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green91.4%
Blue85.5%
CMYK percentages
Cyan71.7%
Magenta0.0%
Yellow6.4%
Key (black)8.6%
Color previews
#42e9da text on a black background
contrast 13.90:1
Card sample
#42e9da text on a white background
contrast 1.51:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42e9da;
Background color
Panel with #42e9da background
background-color: #42e9da;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42e9da;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 233, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 233, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42e9da; background: linear-gradient(135deg, #42e9da, #4289E9);