#040f39
a deep, electric blue · warm · closest name: midnightblue
RGB
4, 15, 57
HSL
228°, 87%, 12%
CMYK
93, 74, 0, 78
Luminance
0.0066
Every format
| HEX | #040f39 |
| RGB | rgb(4, 15, 57) |
| HSL | hsl(228, 87%, 12%) |
| CMYK | cmyk(93%, 74%, 0%, 78%) |
| LAB | lab(6.0 13.3 -28.3) |
| LCH | lch(6.0 31.3 295.1) |
| OKLCH | oklch(0.193 0.083 265.7) |
Copy-ready code
/* CSS */
color: #040f39;
background-color: #040f39;
/* Tailwind (arbitrary) */
class="text-[#040f39] bg-[#040f39]"
/* SCSS */
$brand: #040f39;
/* SwiftUI */
Color(red: 0.016, green: 0.059, blue: 0.224)
/* Android */
Color.parseColor("#040f39")Accessibility — WCAG contrast
Aa
#040f39 on white: 18.54:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040f39 on black: 1.13:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green5.9%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta73.7%
Yellow0.0%
Key (black)77.6%
Color previews
#040f39 text on a black background
contrast 1.13:1
Card sample
#040f39 text on a white background
contrast 18.54:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040f39;
Background color
Panel with #040f39 background
background-color: #040f39;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040f39;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 15, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 15, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040f39; background: linear-gradient(135deg, #040f39, #1C0439);