#0040cc
a dark, electric blue · cool · closest name: slateblue
RGB
0, 64, 204
HSL
221°, 100%, 40%
CMYK
100, 69, 0, 20
Luminance
0.0803
Every format
| HEX | #0040cc |
| RGB | rgb(0, 64, 204) |
| HSL | hsl(221, 100%, 40%) |
| CMYK | cmyk(100%, 69%, 0%, 20%) |
| LAB | lab(34.0 40.1 -75.8) |
| LCH | lch(34.0 85.8 297.9) |
| OKLCH | oklch(0.447 0.222 262.9) |
Copy-ready code
/* CSS */
color: #0040cc;
background-color: #0040cc;
/* Tailwind (arbitrary) */
class="text-[#0040cc] bg-[#0040cc]"
/* SCSS */
$brand: #0040cc;
/* SwiftUI */
Color(red: 0.000, green: 0.251, blue: 0.800)
/* Android */
Color.parseColor("#0040cc")Accessibility — WCAG contrast
Aa
#0040cc on white: 8.06:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0040cc on black: 2.61:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green25.1%
Blue80.0%
CMYK percentages
Cyan100.0%
Magenta68.6%
Yellow0.0%
Key (black)20.0%
Color previews
#0040cc text on a black background
contrast 2.61:1
Card sample
#0040cc text on a white background
contrast 8.06:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0040cc;
Background color
Panel with #0040cc background
background-color: #0040cc;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0040cc;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 64, 204, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 64, 204, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0040cc; background: linear-gradient(135deg, #0040cc, #4800CC);