#040f00
a deep, electric green · cool · closest name: black
RGB
4, 15, 0
HSL
104°, 100%, 3%
CMYK
73, 0, 100, 94
Luminance
0.0037
Every format
| HEX | #040f00 |
| RGB | rgb(4, 15, 0) |
| HSL | hsl(104, 100%, 3%) |
| CMYK | cmyk(73%, 0%, 100%, 94%) |
| LAB | lab(3.3 -5.3 4.9) |
| LCH | lch(3.3 7.2 137.2) |
| OKLCH | oklch(0.151 0.044 134.7) |
Copy-ready code
/* CSS */
color: #040f00;
background-color: #040f00;
/* Tailwind (arbitrary) */
class="text-[#040f00] bg-[#040f00]"
/* SCSS */
$brand: #040f00;
/* SwiftUI */
Color(red: 0.016, green: 0.059, blue: 0.000)
/* Android */
Color.parseColor("#040f00")Accessibility — WCAG contrast
Aa
#040f00 on white: 19.56:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#040f00 on black: 1.07:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green5.9%
Blue0.0%
CMYK percentages
Cyan73.3%
Magenta0.0%
Yellow100.0%
Key (black)94.1%
Color previews
#040f00 text on a black background
contrast 1.07:1
Card sample
#040f00 text on a white background
contrast 19.56:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #040f00;
Background color
Panel with #040f00 background
background-color: #040f00;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #040f00;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 15, 0, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 15, 0, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040f00; background: linear-gradient(135deg, #040f00, #000F06);