#0066cc
a dark, electric blue · cool · closest name: royalblue
RGB
0, 102, 204
HSL
210°, 100%, 40%
CMYK
100, 50, 0, 20
Luminance
0.1386
Every format
| HEX | #0066cc |
| RGB | rgb(0, 102, 204) |
| HSL | hsl(210, 100%, 40%) |
| CMYK | cmyk(100%, 50%, 0%, 20%) |
| LAB | lab(44.0 15.3 -59.5) |
| LCH | lch(44.0 61.5 284.4) |
| OKLCH | oklch(0.522 0.177 255.8) |
Copy-ready code
/* CSS */
color: #0066cc;
background-color: #0066cc;
/* Tailwind (arbitrary) */
class="text-[#0066cc] bg-[#0066cc]"
/* SCSS */
$brand: #0066cc;
/* SwiftUI */
Color(red: 0.000, green: 0.400, blue: 0.800)
/* Android */
Color.parseColor("#0066cc")Accessibility — WCAG contrast
Aa
#0066cc on white: 5.57:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0066cc on black: 3.77:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green40.0%
Blue80.0%
CMYK percentages
Cyan100.0%
Magenta50.0%
Yellow0.0%
Key (black)20.0%
Color previews
#0066cc text on a black background
contrast 3.77:1
Card sample
#0066cc text on a white background
contrast 5.57:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0066cc;
Background color
Panel with #0066cc background
background-color: #0066cc;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0066cc;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 102, 204, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 102, 204, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0066cc; background: linear-gradient(135deg, #0066cc, #2200CC);