#42fddf
a balanced, electric cyan · cool · closest name: aquamarine
RGB
66, 253, 223
HSL
170°, 98%, 63%
CMYK
74, 0, 12, 1
Luminance
0.7674
Every format
| HEX | #42fddf |
| RGB | rgb(66, 253, 223) |
| HSL | hsl(170, 98%, 63%) |
| CMYK | cmyk(74%, 0%, 12%, 1%) |
| LAB | lab(90.2 -52.3 1.2) |
| LCH | lch(90.2 52.3 178.7) |
| OKLCH | oklch(0.897 0.151 179.1) |
Copy-ready code
/* CSS */
color: #42fddf;
background-color: #42fddf;
/* Tailwind (arbitrary) */
class="text-[#42fddf] bg-[#42fddf]"
/* SCSS */
$brand: #42fddf;
/* SwiftUI */
Color(red: 0.259, green: 0.992, blue: 0.875)
/* Android */
Color.parseColor("#42fddf")Accessibility — WCAG contrast
Aa
#42fddf on white: 1.28:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42fddf on black: 16.35:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green99.2%
Blue87.5%
CMYK percentages
Cyan73.9%
Magenta0.0%
Yellow11.9%
Key (black)0.8%
Color previews
#42fddf text on a black background
contrast 16.35:1
Card sample
#42fddf text on a white background
contrast 1.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42fddf;
Background color
Panel with #42fddf background
background-color: #42fddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42fddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 253, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 253, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42fddf; background: linear-gradient(135deg, #42fddf, #429EFD);