#428cd3
a balanced, vivid blue · cool · closest name: steelblue
RGB
66, 140, 211
HSL
209°, 62%, 54%
CMYK
69, 34, 0, 17
Luminance
0.2462
Every format
| HEX | #428cd3 |
| RGB | rgb(66, 140, 211) |
| HSL | hsl(209, 62%, 54%) |
| CMYK | cmyk(69%, 34%, 0%, 17%) |
| LAB | lab(56.7 -0.1 -43.2) |
| LCH | lch(56.7 43.2 269.9) |
| OKLCH | oklch(0.626 0.130 249.9) |
Copy-ready code
/* CSS */
color: #428cd3;
background-color: #428cd3;
/* Tailwind (arbitrary) */
class="text-[#428cd3] bg-[#428cd3]"
/* SCSS */
$brand: #428cd3;
/* SwiftUI */
Color(red: 0.259, green: 0.549, blue: 0.827)
/* Android */
Color.parseColor("#428cd3")Accessibility — WCAG contrast
Aa
#428cd3 on white: 3.55:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#428cd3 on black: 5.92:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green54.9%
Blue82.7%
CMYK percentages
Cyan68.7%
Magenta33.6%
Yellow0.0%
Key (black)17.3%
Color previews
#428cd3 text on a black background
contrast 5.92:1
Card sample
#428cd3 text on a white background
contrast 3.55:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #428cd3;
Background color
Panel with #428cd3 background
background-color: #428cd3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #428cd3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 140, 211, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 140, 211, 0.45);
Border & gradient
Gradient panel
border: 3px solid #428cd3; background: linear-gradient(135deg, #428cd3, #5942D3);