#042139
a deep, electric blue · cool · closest name: black
RGB
4, 33, 57
HSL
207°, 87%, 12%
CMYK
93, 42, 0, 78
Luminance
0.0141
Every format
| HEX | #042139 |
| RGB | rgb(4, 33, 57) |
| HSL | hsl(207, 87%, 12%) |
| CMYK | cmyk(93%, 42%, 0%, 78%) |
| LAB | lab(12.0 -0.2 -18.6) |
| LCH | lch(12.0 18.6 269.4) |
| OKLCH | oklch(0.241 0.057 247.4) |
Copy-ready code
/* CSS */
color: #042139;
background-color: #042139;
/* Tailwind (arbitrary) */
class="text-[#042139] bg-[#042139]"
/* SCSS */
$brand: #042139;
/* SwiftUI */
Color(red: 0.016, green: 0.129, blue: 0.224)
/* Android */
Color.parseColor("#042139")Accessibility — WCAG contrast
Aa
#042139 on white: 16.38:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#042139 on black: 1.28:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green12.9%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta42.1%
Yellow0.0%
Key (black)77.6%
Color previews
#042139 text on a black background
contrast 1.28:1
Card sample
#042139 text on a white background
contrast 16.38:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #042139;
Background color
Panel with #042139 background
background-color: #042139;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #042139;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 33, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 33, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #042139; background: linear-gradient(135deg, #042139, #0A0439);