#42b9da
a balanced, vivid cyan · cool · closest name: skyblue
RGB
66, 185, 218
HSL
193°, 67%, 56%
CMYK
70, 15, 0, 15
Luminance
0.4092
Every format
| HEX | #42b9da |
| RGB | rgb(66, 185, 218) |
| HSL | hsl(193, 67%, 56%) |
| CMYK | cmyk(70%, 15%, 0%, 15%) |
| LAB | lab(70.1 -22.5 -26.2) |
| LCH | lch(70.1 34.5 229.4) |
| OKLCH | oklch(0.733 0.114 220.1) |
Copy-ready code
/* CSS */
color: #42b9da;
background-color: #42b9da;
/* Tailwind (arbitrary) */
class="text-[#42b9da] bg-[#42b9da]"
/* SCSS */
$brand: #42b9da;
/* SwiftUI */
Color(red: 0.259, green: 0.725, blue: 0.855)
/* Android */
Color.parseColor("#42b9da")Accessibility — WCAG contrast
Aa
#42b9da on white: 2.29:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42b9da on black: 9.18:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green72.5%
Blue85.5%
CMYK percentages
Cyan69.7%
Magenta15.1%
Yellow0.0%
Key (black)14.5%
Color previews
#42b9da text on a black background
contrast 9.18:1
Card sample
#42b9da text on a white background
contrast 2.29:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42b9da;
Background color
Panel with #42b9da background
background-color: #42b9da;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42b9da;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 185, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 185, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42b9da; background: linear-gradient(135deg, #42b9da, #4254DA);