#040539
a deep, electric blue · warm · closest name: midnightblue
RGB
4, 5, 57
HSL
239°, 87%, 12%
CMYK
93, 91, 0, 78
Luminance
0.0043
Every format
| HEX | #040539 |
| RGB | rgb(4, 5, 57) |
| HSL | hsl(239, 87%, 12%) |
| CMYK | cmyk(93%, 91%, 0%, 78%) |
| LAB | lab(3.9 17.8 -31.7) |
| LCH | lch(3.9 36.4 299.3) |
| OKLCH | oklch(0.172 0.097 269.2) |
Copy-ready code
/* CSS */
color: #040539;
background-color: #040539;
/* Tailwind (arbitrary) */
class="text-[#040539] bg-[#040539]"
/* SCSS */
$brand: #040539;
/* SwiftUI */
Color(red: 0.016, green: 0.020, blue: 0.224)
/* Android */
Color.parseColor("#040539")Accessibility — WCAG contrast
Aa
#040539 on white: 19.34:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040539 on black: 1.09:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green2.0%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta91.2%
Yellow0.0%
Key (black)77.6%
Color previews
#040539 text on a black background
contrast 1.09:1
Card sample
#040539 text on a white background
contrast 19.34:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040539;
Background color
Panel with #040539 background
background-color: #040539;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040539;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 5, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 5, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040539; background: linear-gradient(135deg, #040539, #260439);