#166fdb
a balanced, electric blue · cool · closest name: royalblue
RGB
22, 111, 219
HSL
213°, 82%, 47%
CMYK
90, 49, 0, 14
Luminance
0.1665
Every format
| HEX | #166fdb |
| RGB | rgb(22, 111, 219) |
| HSL | hsl(213, 82%, 47%) |
| CMYK | cmyk(90%, 49%, 0%, 14%) |
| LAB | lab(47.8 16.2 -62.0) |
| LCH | lch(47.8 64.0 284.7) |
| OKLCH | oklch(0.555 0.183 256.9) |
Copy-ready code
/* CSS */
color: #166fdb;
background-color: #166fdb;
/* Tailwind (arbitrary) */
class="text-[#166fdb] bg-[#166fdb]"
/* SCSS */
$brand: #166fdb;
/* SwiftUI */
Color(red: 0.086, green: 0.435, blue: 0.859)
/* Android */
Color.parseColor("#166fdb")Accessibility — WCAG contrast
Aa
#166fdb on white: 4.85:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#166fdb on black: 4.33:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red8.6%
Green43.5%
Blue85.9%
CMYK percentages
Cyan90.0%
Magenta49.3%
Yellow0.0%
Key (black)14.1%
Color previews
#166fdb text on a black background
contrast 4.33:1
Card sample
#166fdb text on a white background
contrast 4.85:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #166fdb;
Background color
Panel with #166fdb background
background-color: #166fdb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #166fdb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(22, 111, 219, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(22, 111, 219, 0.45);
Border & gradient
Gradient panel
border: 3px solid #166fdb; background: linear-gradient(135deg, #166fdb, #4016DB);