#040e21
a deep, electric blue · cool · closest name: black
RGB
4, 14, 33
HSL
219°, 78%, 7%
CMYK
88, 58, 0, 87
Luminance
0.0045
Every format
| HEX | #040e21 |
| RGB | rgb(4, 14, 33) |
| HSL | hsl(219, 78%, 7%) |
| CMYK | cmyk(88%, 58%, 0%, 87%) |
| LAB | lab(4.1 2.2 -13.4) |
| LCH | lch(4.1 13.5 279.4) |
| OKLCH | oklch(0.166 0.043 259.7) |
Copy-ready code
/* CSS */
color: #040e21;
background-color: #040e21;
/* Tailwind (arbitrary) */
class="text-[#040e21] bg-[#040e21]"
/* SCSS */
$brand: #040e21;
/* SwiftUI */
Color(red: 0.016, green: 0.055, blue: 0.129)
/* Android */
Color.parseColor("#040e21")Accessibility — WCAG contrast
Aa
#040e21 on white: 19.27:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040e21 on black: 1.09:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green5.5%
Blue12.9%
CMYK percentages
Cyan87.9%
Magenta57.6%
Yellow0.0%
Key (black)87.1%
Color previews
#040e21 text on a black background
contrast 1.09:1
Card sample
#040e21 text on a white background
contrast 19.27:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040e21;
Background color
Panel with #040e21 background
background-color: #040e21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040e21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 14, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 14, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040e21; background: linear-gradient(135deg, #040e21, #0D0421);