#042f39
a deep, electric cyan · cool · closest name: darkslategray
RGB
4, 47, 57
HSL
191°, 87%, 12%
CMYK
93, 18, 0, 78
Luminance
0.0235
Every format
| HEX | #042f39 |
| RGB | rgb(4, 47, 57) |
| HSL | hsl(191, 87%, 12%) |
| CMYK | cmyk(93%, 18%, 0%, 78%) |
| LAB | lab(17.3 -9.9 -10.4) |
| LCH | lch(17.3 14.4 226.4) |
| OKLCH | oklch(0.283 0.048 217.6) |
Copy-ready code
/* CSS */
color: #042f39;
background-color: #042f39;
/* Tailwind (arbitrary) */
class="text-[#042f39] bg-[#042f39]"
/* SCSS */
$brand: #042f39;
/* SwiftUI */
Color(red: 0.016, green: 0.184, blue: 0.224)
/* Android */
Color.parseColor("#042f39")Accessibility — WCAG contrast
Aa
#042f39 on white: 14.28:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#042f39 on black: 1.47:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green18.4%
Blue22.4%
CMYK percentages
Cyan93.0%
Magenta17.5%
Yellow0.0%
Key (black)77.6%
Color previews
#042f39 text on a black background
contrast 1.47:1
Card sample
#042f39 text on a white background
contrast 14.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #042f39;
Background color
Panel with #042f39 background
background-color: #042f39;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #042f39;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 47, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 47, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #042f39; background: linear-gradient(135deg, #042f39, #040C39);