#428fef
a balanced, electric blue · cool · closest name: dodgerblue
RGB
66, 143, 239
HSL
213°, 84%, 60%
CMYK
72, 40, 0, 6
Luminance
0.2704
Every format
| HEX | #428fef |
| RGB | rgb(66, 143, 239) |
| HSL | hsl(213, 84%, 60%) |
| CMYK | cmyk(72%, 40%, 0%, 6%) |
| LAB | lab(59.0 8.0 -55.1) |
| LCH | lch(59.0 55.7 278.2) |
| OKLCH | oklch(0.648 0.163 255.5) |
Copy-ready code
/* CSS */
color: #428fef;
background-color: #428fef;
/* Tailwind (arbitrary) */
class="text-[#428fef] bg-[#428fef]"
/* SCSS */
$brand: #428fef;
/* SwiftUI */
Color(red: 0.259, green: 0.561, blue: 0.937)
/* Android */
Color.parseColor("#428fef")Accessibility — WCAG contrast
Aa
#428fef on white: 3.28:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#428fef on black: 6.41:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green56.1%
Blue93.7%
CMYK percentages
Cyan72.4%
Magenta40.2%
Yellow0.0%
Key (black)6.3%
Color previews
#428fef text on a black background
contrast 6.41:1
Card sample
#428fef text on a white background
contrast 3.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #428fef;
Background color
Panel with #428fef background
background-color: #428fef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #428fef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 143, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 143, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #428fef; background: linear-gradient(135deg, #428fef, #6842EF);