#0042df
a dark, electric blue · cool · closest name: slateblue
RGB
0, 66, 223
HSL
222°, 100%, 44%
CMYK
100, 70, 0, 13
Luminance
0.0922
Every format
| HEX | #0042df |
| RGB | rgb(0, 66, 223) |
| HSL | hsl(222, 100%, 44%) |
| CMYK | cmyk(100%, 70%, 0%, 13%) |
| LAB | lab(36.4 45.9 -82.9) |
| LCH | lch(36.4 94.7 299.0) |
| OKLCH | oklch(0.470 0.242 263.2) |
Copy-ready code
/* CSS */
color: #0042df;
background-color: #0042df;
/* Tailwind (arbitrary) */
class="text-[#0042df] bg-[#0042df]"
/* SCSS */
$brand: #0042df;
/* SwiftUI */
Color(red: 0.000, green: 0.259, blue: 0.875)
/* Android */
Color.parseColor("#0042df")Accessibility — WCAG contrast
Aa
#0042df on white: 7.38:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0042df on black: 2.84:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green25.9%
Blue87.5%
CMYK percentages
Cyan100.0%
Magenta70.4%
Yellow0.0%
Key (black)12.5%
Color previews
#0042df text on a black background
contrast 2.84:1
Card sample
#0042df text on a white background
contrast 7.38:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0042df;
Background color
Panel with #0042df background
background-color: #0042df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0042df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 66, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 66, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0042df; background: linear-gradient(135deg, #0042df, #5200DF);