#042ddf
a dark, electric blue · warm · closest name: blue
RGB
4, 45, 223
HSL
229°, 97%, 45%
CMYK
98, 80, 0, 13
Luminance
0.0723
Every format
| HEX | #042ddf |
| RGB | rgb(4, 45, 223) |
| HSL | hsl(229, 97%, 45%) |
| CMYK | cmyk(98%, 80%, 0%, 13%) |
| LAB | lab(32.3 57.7 -89.7) |
| LCH | lch(32.3 106.6 302.7) |
| OKLCH | oklch(0.441 0.261 264.4) |
Copy-ready code
/* CSS */
color: #042ddf;
background-color: #042ddf;
/* Tailwind (arbitrary) */
class="text-[#042ddf] bg-[#042ddf]"
/* SCSS */
$brand: #042ddf;
/* SwiftUI */
Color(red: 0.016, green: 0.176, blue: 0.875)
/* Android */
Color.parseColor("#042ddf")Accessibility — WCAG contrast
Aa
#042ddf on white: 8.59:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#042ddf on black: 2.45:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.6%
Green17.6%
Blue87.5%
CMYK percentages
Cyan98.2%
Magenta79.8%
Yellow0.0%
Key (black)12.5%
Color previews
#042ddf text on a black background
contrast 2.45:1
Card sample
#042ddf text on a white background
contrast 8.59:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #042ddf;
Background color
Panel with #042ddf background
background-color: #042ddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #042ddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(4, 45, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 45, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #042ddf; background: linear-gradient(135deg, #042ddf, #6D04DF);