#166ddf
a balanced, electric blue · cool · closest name: royalblue
RGB
22, 109, 223
HSL
214°, 82%, 48%
CMYK
90, 51, 0, 13
Luminance
0.1644
Every format
| HEX | #166ddf |
| RGB | rgb(22, 109, 223) |
| HSL | hsl(214, 82%, 48%) |
| CMYK | cmyk(90%, 51%, 0%, 13%) |
| LAB | lab(47.5 19.1 -64.7) |
| LCH | lch(47.5 67.4 286.4) |
| OKLCH | oklch(0.554 0.191 258.0) |
Copy-ready code
/* CSS */
color: #166ddf;
background-color: #166ddf;
/* Tailwind (arbitrary) */
class="text-[#166ddf] bg-[#166ddf]"
/* SCSS */
$brand: #166ddf;
/* SwiftUI */
Color(red: 0.086, green: 0.427, blue: 0.875)
/* Android */
Color.parseColor("#166ddf")Accessibility — WCAG contrast
Aa
#166ddf on white: 4.90:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#166ddf on black: 4.29:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red8.6%
Green42.7%
Blue87.5%
CMYK percentages
Cyan90.1%
Magenta51.1%
Yellow0.0%
Key (black)12.5%
Color previews
#166ddf text on a black background
contrast 4.29:1
Card sample
#166ddf text on a white background
contrast 4.90:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #166ddf;
Background color
Panel with #166ddf background
background-color: #166ddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #166ddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(22, 109, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(22, 109, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #166ddf; background: linear-gradient(135deg, #166ddf, #4516DF);