#040521
a deep, electric blue · warm · closest name: black
RGB
4, 5, 33
HSL
238°, 78%, 7%
CMYK
88, 85, 0, 87
Luminance
0.0024
Every format
| HEX | #040521 |
| RGB | rgb(4, 5, 33) |
| HSL | hsl(238, 78%, 7%) |
| CMYK | cmyk(88%, 85%, 0%, 87%) |
| LAB | lab(2.2 6.0 -16.2) |
| LCH | lch(2.2 17.3 290.4) |
| OKLCH | oklch(0.140 0.060 273.2) |
Copy-ready code
/* CSS */
color: #040521;
background-color: #040521;
/* Tailwind (arbitrary) */
class="text-[#040521] bg-[#040521]"
/* SCSS */
$brand: #040521;
/* SwiftUI */
Color(red: 0.016, green: 0.020, blue: 0.129)
/* Android */
Color.parseColor("#040521")Accessibility — WCAG contrast
Aa
#040521 on white: 20.02:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040521 on black: 1.05:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green2.0%
Blue12.9%
CMYK percentages
Cyan87.9%
Magenta84.8%
Yellow0.0%
Key (black)87.1%
Color previews
#040521 text on a black background
contrast 1.05:1
Card sample
#040521 text on a white background
contrast 20.02:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040521;
Background color
Panel with #040521 background
background-color: #040521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 5, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 5, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040521; background: linear-gradient(135deg, #040521, #160421);