#040421
a deep, electric blue · warm · closest name: black
RGB
4, 4, 33
HSL
240°, 78%, 7%
CMYK
88, 88, 0, 87
Luminance
0.0022
Every format
| HEX | #040421 |
| RGB | rgb(4, 4, 33) |
| HSL | hsl(240, 78%, 7%) |
| CMYK | cmyk(88%, 88%, 0%, 87%) |
| LAB | lab(2.0 6.4 -16.5) |
| LCH | lch(2.0 17.7 291.2) |
| OKLCH | oklch(0.136 0.062 274.4) |
Copy-ready code
/* CSS */
color: #040421;
background-color: #040421;
/* Tailwind (arbitrary) */
class="text-[#040421] bg-[#040421]"
/* SCSS */
$brand: #040421;
/* SwiftUI */
Color(red: 0.016, green: 0.016, blue: 0.129)
/* Android */
Color.parseColor("#040421")Accessibility — WCAG contrast
Aa
#040421 on white: 20.11:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040421 on black: 1.04:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green1.6%
Blue12.9%
CMYK percentages
Cyan87.9%
Magenta87.9%
Yellow0.0%
Key (black)87.1%
Color previews
#040421 text on a black background
contrast 1.04:1
Card sample
#040421 text on a white background
contrast 20.11:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040421;
Background color
Panel with #040421 background
background-color: #040421;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040421;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 4, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 4, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040421; background: linear-gradient(135deg, #040421, #170421);