#0366ce
a dark, electric blue · cool · closest name: royalblue
RGB
3, 102, 206
HSL
211°, 97%, 41%
CMYK
99, 51, 0, 19
Luminance
0.1398
Every format
| HEX | #0366ce |
| RGB | rgb(3, 102, 206) |
| HSL | hsl(211, 97%, 41%) |
| CMYK | cmyk(99%, 51%, 0%, 19%) |
| LAB | lab(44.2 16.2 -60.4) |
| LCH | lch(44.2 62.5 285.0) |
| OKLCH | oklch(0.524 0.179 256.3) |
Copy-ready code
/* CSS */
color: #0366ce;
background-color: #0366ce;
/* Tailwind (arbitrary) */
class="text-[#0366ce] bg-[#0366ce]"
/* SCSS */
$brand: #0366ce;
/* SwiftUI */
Color(red: 0.012, green: 0.400, blue: 0.808)
/* Android */
Color.parseColor("#0366ce")Accessibility — WCAG contrast
Aa
#0366ce on white: 5.53:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0366ce on black: 3.80:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.2%
Green40.0%
Blue80.8%
CMYK percentages
Cyan98.5%
Magenta50.5%
Yellow0.0%
Key (black)19.2%
Color previews
#0366ce text on a black background
contrast 3.80:1
Card sample
#0366ce text on a white background
contrast 5.53:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0366ce;
Background color
Panel with #0366ce background
background-color: #0366ce;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0366ce;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(3, 102, 206, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(3, 102, 206, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0366ce; background: linear-gradient(135deg, #0366ce, #2703CE);