#42f9da
a balanced, electric cyan · cool · closest name: aquamarine
RGB
66, 249, 218
HSL
170°, 94%, 62%
CMYK
74, 0, 12, 2
Luminance
0.7397
Every format
| HEX | #42f9da |
| RGB | rgb(66, 249, 218) |
| HSL | hsl(170, 94%, 62%) |
| CMYK | cmyk(74%, 0%, 12%, 2%) |
| LAB | lab(88.9 -51.9 1.9) |
| LCH | lch(88.9 51.9 177.9) |
| OKLCH | oklch(0.886 0.149 178.4) |
Copy-ready code
/* CSS */
color: #42f9da;
background-color: #42f9da;
/* Tailwind (arbitrary) */
class="text-[#42f9da] bg-[#42f9da]"
/* SCSS */
$brand: #42f9da;
/* SwiftUI */
Color(red: 0.259, green: 0.976, blue: 0.855)
/* Android */
Color.parseColor("#42f9da")Accessibility — WCAG contrast
Aa
#42f9da on white: 1.33:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42f9da on black: 15.79:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green97.6%
Blue85.5%
CMYK percentages
Cyan73.5%
Magenta0.0%
Yellow12.4%
Key (black)2.4%
Color previews
#42f9da text on a black background
contrast 15.79:1
Card sample
#42f9da text on a white background
contrast 1.33:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42f9da;
Background color
Panel with #42f9da background
background-color: #42f9da;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42f9da;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 249, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 249, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42f9da; background: linear-gradient(135deg, #42f9da, #429EF9);