#040b39
a deep, electric blue · warm · closest name: midnightblue
RGB
4, 11, 57
HSL
232°, 87%, 12%
CMYK
93, 81, 0, 78
Luminance
0.0056
Every format
| HEX | #040b39 |
| RGB | rgb(4, 11, 57) |
| HSL | hsl(232, 87%, 12%) |
| CMYK | cmyk(93%, 81%, 0%, 78%) |
| LAB | lab(5.1 15.3 -29.8) |
| LCH | lch(5.1 33.5 297.2) |
| OKLCH | oklch(0.185 0.089 267.4) |
Copy-ready code
/* CSS */
color: #040b39;
background-color: #040b39;
/* Tailwind (arbitrary) */
class="text-[#040b39] bg-[#040b39]"
/* SCSS */
$brand: #040b39;
/* SwiftUI */
Color(red: 0.016, green: 0.043, blue: 0.224)
/* Android */
Color.parseColor("#040b39")Accessibility — WCAG contrast
Aa
#040b39 on white: 18.88:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040b39 on black: 1.11:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green4.3%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta80.7%
Yellow0.0%
Key (black)77.6%
Color previews
#040b39 text on a black background
contrast 1.11:1
Card sample
#040b39 text on a white background
contrast 18.88:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040b39;
Background color
Panel with #040b39 background
background-color: #040b39;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040b39;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 11, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 11, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040b39; background: linear-gradient(135deg, #040b39, #200439);