#040c17
a deep, vivid blue · cool · closest name: black
RGB
4, 12, 23
HSL
215°, 70%, 5%
CMYK
83, 48, 0, 91
Luminance
0.0035
Every format
| HEX | #040c17 |
| RGB | rgb(4, 12, 23) |
| HSL | hsl(215, 70%, 5%) |
| CMYK | cmyk(83%, 48%, 0%, 91%) |
| LAB | lab(3.2 0.1 -6.8) |
| LCH | lch(3.2 6.8 271.0) |
| OKLCH | oklch(0.152 0.028 252.9) |
Copy-ready code
/* CSS */
color: #040c17;
background-color: #040c17;
/* Tailwind (arbitrary) */
class="text-[#040c17] bg-[#040c17]"
/* SCSS */
$brand: #040c17;
/* SwiftUI */
Color(red: 0.016, green: 0.047, blue: 0.090)
/* Android */
Color.parseColor("#040c17")Accessibility — WCAG contrast
Aa
#040c17 on white: 19.62:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040c17 on black: 1.07:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green4.7%
Blue9.0%
CMYK percentages
Cyan82.6%
Magenta47.8%
Yellow0.0%
Key (black)91.0%
Color previews
#040c17 text on a black background
contrast 1.07:1
Card sample
#040c17 text on a white background
contrast 19.62:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040c17;
Background color
Panel with #040c17 background
background-color: #040c17;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040c17;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 12, 23, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 12, 23, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040c17; background: linear-gradient(135deg, #040c17, #090417);