#042339
a deep, electric blue · cool · closest name: black
RGB
4, 35, 57
HSL
205°, 87%, 12%
CMYK
93, 39, 0, 78
Luminance
0.0152
Every format
| HEX | #042339 |
| RGB | rgb(4, 35, 57) |
| HSL | hsl(205, 87%, 12%) |
| CMYK | cmyk(93%, 39%, 0%, 78%) |
| LAB | lab(12.8 -1.7 -17.4) |
| LCH | lch(12.8 17.5 264.5) |
| OKLCH | oklch(0.247 0.055 244.0) |
Copy-ready code
/* CSS */
color: #042339;
background-color: #042339;
/* Tailwind (arbitrary) */
class="text-[#042339] bg-[#042339]"
/* SCSS */
$brand: #042339;
/* SwiftUI */
Color(red: 0.016, green: 0.137, blue: 0.224)
/* Android */
Color.parseColor("#042339")Accessibility — WCAG contrast
Aa
#042339 on white: 16.10:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#042339 on black: 1.30:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green13.7%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta38.6%
Yellow0.0%
Key (black)77.6%
Color previews
#042339 text on a black background
contrast 1.30:1
Card sample
#042339 text on a white background
contrast 16.10:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #042339;
Background color
Panel with #042339 background
background-color: #042339;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #042339;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 35, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 35, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #042339; background: linear-gradient(135deg, #042339, #080439);