#166ad3
a balanced, electric blue · cool · closest name: royalblue
RGB
22, 106, 211
HSL
213°, 81%, 46%
CMYK
90, 50, 0, 17
Luminance
0.1518
Every format
| HEX | #166ad3 |
| RGB | rgb(22, 106, 211) |
| HSL | hsl(213, 81%, 46%) |
| CMYK | cmyk(90%, 50%, 0%, 17%) |
| LAB | lab(45.9 16.3 -60.5) |
| LCH | lch(45.9 62.7 285.1) |
| OKLCH | oklch(0.538 0.179 257.2) |
Copy-ready code
/* CSS */
color: #166ad3;
background-color: #166ad3;
/* Tailwind (arbitrary) */
class="text-[#166ad3] bg-[#166ad3]"
/* SCSS */
$brand: #166ad3;
/* SwiftUI */
Color(red: 0.086, green: 0.416, blue: 0.827)
/* Android */
Color.parseColor("#166ad3")Accessibility — WCAG contrast
Aa
#166ad3 on white: 5.20:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#166ad3 on black: 4.04:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red8.6%
Green41.6%
Blue82.7%
CMYK percentages
Cyan89.6%
Magenta49.8%
Yellow0.0%
Key (black)17.3%
Color previews
#166ad3 text on a black background
contrast 4.04:1
Card sample
#166ad3 text on a white background
contrast 5.20:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #166ad3;
Background color
Panel with #166ad3 background
background-color: #166ad3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #166ad3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(22, 106, 211, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(22, 106, 211, 0.45);
Border & gradient
Gradient panel
border: 3px solid #166ad3; background: linear-gradient(135deg, #166ad3, #4016D3);