#040c39
a deep, electric blue · warm · closest name: midnightblue
RGB
4, 12, 57
HSL
231°, 87%, 12%
CMYK
93, 79, 0, 78
Luminance
0.0058
Every format
| HEX | #040c39 |
| RGB | rgb(4, 12, 57) |
| HSL | hsl(231, 87%, 12%) |
| CMYK | cmyk(93%, 79%, 0%, 78%) |
| LAB | lab(5.3 14.8 -29.4) |
| LCH | lch(5.3 33.0 296.8) |
| OKLCH | oklch(0.187 0.087 267.0) |
Copy-ready code
/* CSS */
color: #040c39;
background-color: #040c39;
/* Tailwind (arbitrary) */
class="text-[#040c39] bg-[#040c39]"
/* SCSS */
$brand: #040c39;
/* SwiftUI */
Color(red: 0.016, green: 0.047, blue: 0.224)
/* Android */
Color.parseColor("#040c39")Accessibility — WCAG contrast
Aa
#040c39 on white: 18.80:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040c39 on black: 1.12:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green4.7%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta78.9%
Yellow0.0%
Key (black)77.6%
Color previews
#040c39 text on a black background
contrast 1.12:1
Card sample
#040c39 text on a white background
contrast 18.80:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040c39;
Background color
Panel with #040c39 background
background-color: #040c39;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040c39;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 12, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 12, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040c39; background: linear-gradient(135deg, #040c39, #1F0439);