#42ade3
a balanced, vivid blue · cool · closest name: steelblue
RGB
66, 173, 227
HSL
200°, 74%, 58%
CMYK
71, 24, 0, 11
Luminance
0.3659
Every format
| HEX | #42ade3 |
| RGB | rgb(66, 173, 227) |
| HSL | hsl(200, 74%, 58%) |
| CMYK | cmyk(71%, 24%, 0%, 11%) |
| LAB | lab(67.0 -13.3 -36.0) |
| LCH | lch(67.0 38.3 249.8) |
| OKLCH | oklch(0.709 0.124 234.6) |
Copy-ready code
/* CSS */
color: #42ade3;
background-color: #42ade3;
/* Tailwind (arbitrary) */
class="text-[#42ade3] bg-[#42ade3]"
/* SCSS */
$brand: #42ade3;
/* SwiftUI */
Color(red: 0.259, green: 0.678, blue: 0.890)
/* Android */
Color.parseColor("#42ade3")Accessibility — WCAG contrast
Aa
#42ade3 on white: 2.52:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42ade3 on black: 8.32:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green67.8%
Blue89.0%
CMYK percentages
Cyan70.9%
Magenta23.8%
Yellow0.0%
Key (black)11.0%
Color previews
#42ade3 text on a black background
contrast 8.32:1
Card sample
#42ade3 text on a white background
contrast 2.52:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42ade3;
Background color
Panel with #42ade3 background
background-color: #42ade3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42ade3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 173, 227, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 173, 227, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42ade3; background: linear-gradient(135deg, #42ade3, #4242E3);