#0366cd
a dark, electric blue · cool · closest name: royalblue
RGB
3, 102, 205
HSL
211°, 97%, 41%
CMYK
99, 50, 0, 20
Luminance
0.1393
Every format
| HEX | #0366cd |
| RGB | rgb(3, 102, 205) |
| HSL | hsl(211, 97%, 41%) |
| CMYK | cmyk(99%, 50%, 0%, 20%) |
| LAB | lab(44.1 15.8 -59.9) |
| LCH | lch(44.1 62.0 284.7) |
| OKLCH | oklch(0.523 0.178 256.2) |
Copy-ready code
/* CSS */
color: #0366cd;
background-color: #0366cd;
/* Tailwind (arbitrary) */
class="text-[#0366cd] bg-[#0366cd]"
/* SCSS */
$brand: #0366cd;
/* SwiftUI */
Color(red: 0.012, green: 0.400, blue: 0.804)
/* Android */
Color.parseColor("#0366cd")Accessibility — WCAG contrast
Aa
#0366cd on white: 5.55:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0366cd on black: 3.79:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.2%
Green40.0%
Blue80.4%
CMYK percentages
Cyan98.5%
Magenta50.2%
Yellow0.0%
Key (black)19.6%
Color previews
#0366cd text on a black background
contrast 3.79:1
Card sample
#0366cd text on a white background
contrast 5.55:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0366cd;
Background color
Panel with #0366cd background
background-color: #0366cd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0366cd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(3, 102, 205, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(3, 102, 205, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0366cd; background: linear-gradient(135deg, #0366cd, #2703CD);