#428bc9
a balanced, vivid blue · cool · closest name: steelblue
RGB
66, 139, 201
HSL
208°, 56%, 52%
CMYK
67, 31, 0, 21
Luminance
0.2384
Every format
| HEX | #428bc9 |
| RGB | rgb(66, 139, 201) |
| HSL | hsl(208, 56%, 52%) |
| CMYK | cmyk(67%, 31%, 0%, 21%) |
| LAB | lab(55.9 -2.9 -38.8) |
| LCH | lch(55.9 38.9 265.7) |
| OKLCH | oklch(0.618 0.119 246.9) |
Copy-ready code
/* CSS */
color: #428bc9;
background-color: #428bc9;
/* Tailwind (arbitrary) */
class="text-[#428bc9] bg-[#428bc9]"
/* SCSS */
$brand: #428bc9;
/* SwiftUI */
Color(red: 0.259, green: 0.545, blue: 0.788)
/* Android */
Color.parseColor("#428bc9")Accessibility — WCAG contrast
Aa
#428bc9 on white: 3.64:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#428bc9 on black: 5.77:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green54.5%
Blue78.8%
CMYK percentages
Cyan67.2%
Magenta30.8%
Yellow0.0%
Key (black)21.2%
Color previews
#428bc9 text on a black background
contrast 5.77:1
Card sample
#428bc9 text on a white background
contrast 3.64:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #428bc9;
Background color
Panel with #428bc9 background
background-color: #428bc9;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #428bc9;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 139, 201, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 139, 201, 0.45);
Border & gradient
Gradient panel
border: 3px solid #428bc9; background: linear-gradient(135deg, #428bc9, #5342C9);