#0039b4
a dark, electric blue · cool · closest name: slateblue
RGB
0, 57, 180
HSL
221°, 100%, 35%
CMYK
100, 68, 0, 29
Luminance
0.0622
Every format
| HEX | #0039b4 |
| RGB | rgb(0, 57, 180) |
| HSL | hsl(221, 100%, 35%) |
| CMYK | cmyk(100%, 68%, 0%, 29%) |
| LAB | lab(30.0 35.5 -68.5) |
| LCH | lch(30.0 77.1 297.4) |
| OKLCH | oklch(0.410 0.200 262.7) |
Copy-ready code
/* CSS */
color: #0039b4;
background-color: #0039b4;
/* Tailwind (arbitrary) */
class="text-[#0039b4] bg-[#0039b4]"
/* SCSS */
$brand: #0039b4;
/* SwiftUI */
Color(red: 0.000, green: 0.224, blue: 0.706)
/* Android */
Color.parseColor("#0039b4")Accessibility — WCAG contrast
Aa
#0039b4 on white: 9.36:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0039b4 on black: 2.24:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green22.4%
Blue70.6%
CMYK percentages
Cyan100.0%
Magenta68.3%
Yellow0.0%
Key (black)29.4%
Color previews
#0039b4 text on a black background
contrast 2.24:1
Card sample
#0039b4 text on a white background
contrast 9.36:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0039b4;
Background color
Panel with #0039b4 background
background-color: #0039b4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0039b4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 57, 180, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 57, 180, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0039b4; background: linear-gradient(135deg, #0039b4, #3F00B4);