#42fffd
a balanced, electric cyan · cool · closest name: cyan
RGB
66, 255, 253
HSL
179°, 100%, 63%
CMYK
74, 0, 1, 0
Luminance
0.7977
Every format
| HEX | #42fffd |
| RGB | rgb(66, 255, 253) |
| HSL | hsl(179, 100%, 63%) |
| CMYK | cmyk(74%, 0%, 1%, 0%) |
| LAB | lab(91.6 -45.2 -12.3) |
| LCH | lch(91.6 46.9 195.3) |
| OKLCH | oklch(0.910 0.144 193.8) |
Copy-ready code
/* CSS */
color: #42fffd;
background-color: #42fffd;
/* Tailwind (arbitrary) */
class="text-[#42fffd] bg-[#42fffd]"
/* SCSS */
$brand: #42fffd;
/* SwiftUI */
Color(red: 0.259, green: 1.000, blue: 0.992)
/* Android */
Color.parseColor("#42fffd")Accessibility — WCAG contrast
Aa
#42fffd on white: 1.24:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42fffd on black: 16.95:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green100.0%
Blue99.2%
CMYK percentages
Cyan74.1%
Magenta0.0%
Yellow0.8%
Key (black)0.0%
Color previews
#42fffd text on a black background
contrast 16.95:1
Card sample
#42fffd text on a white background
contrast 1.24:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42fffd;
Background color
Panel with #42fffd background
background-color: #42fffd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42fffd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 255, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 255, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42fffd; background: linear-gradient(135deg, #42fffd, #4283FF);