#040f2f
a deep, electric blue · cool · closest name: black
RGB
4, 15, 47
HSL
225°, 84%, 10%
CMYK
92, 68, 0, 82
Luminance
0.0057
Every format
| HEX | #040f2f |
| RGB | rgb(4, 15, 47) |
| HSL | hsl(225, 84%, 10%) |
| CMYK | cmyk(92%, 68%, 0%, 82%) |
| LAB | lab(5.2 7.8 -22.3) |
| LCH | lch(5.2 23.6 289.2) |
| OKLCH | oklch(0.182 0.067 264.4) |
Copy-ready code
/* CSS */
color: #040f2f;
background-color: #040f2f;
/* Tailwind (arbitrary) */
class="text-[#040f2f] bg-[#040f2f]"
/* SCSS */
$brand: #040f2f;
/* SwiftUI */
Color(red: 0.016, green: 0.059, blue: 0.184)
/* Android */
Color.parseColor("#040f2f")Accessibility — WCAG contrast
Aa
#040f2f on white: 18.84:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040f2f on black: 1.11:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green5.9%
Blue18.4%
CMYK percentages
Cyan91.5%
Magenta68.1%
Yellow0.0%
Key (black)81.6%
Color previews
#040f2f text on a black background
contrast 1.11:1
Card sample
#040f2f text on a white background
contrast 18.84:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040f2f;
Background color
Panel with #040f2f background
background-color: #040f2f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040f2f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 15, 47, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 15, 47, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040f2f; background: linear-gradient(135deg, #040f2f, #16042F);