#166fef
a balanced, electric blue · cool · closest name: royalblue
RGB
22, 111, 239
HSL
215°, 87%, 51%
CMYK
91, 54, 0, 6
Luminance
0.1777
Every format
| HEX | #166fef |
| RGB | rgb(22, 111, 239) |
| HSL | hsl(215, 87%, 51%) |
| CMYK | cmyk(91%, 54%, 0%, 6%) |
| LAB | lab(49.2 24.0 -71.0) |
| LCH | lch(49.2 74.9 288.7) |
| OKLCH | oklch(0.570 0.209 259.2) |
Copy-ready code
/* CSS */
color: #166fef;
background-color: #166fef;
/* Tailwind (arbitrary) */
class="text-[#166fef] bg-[#166fef]"
/* SCSS */
$brand: #166fef;
/* SwiftUI */
Color(red: 0.086, green: 0.435, blue: 0.937)
/* Android */
Color.parseColor("#166fef")Accessibility — WCAG contrast
Aa
#166fef on white: 4.61:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#166fef on black: 4.55:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red8.6%
Green43.5%
Blue93.7%
CMYK percentages
Cyan90.8%
Magenta53.6%
Yellow0.0%
Key (black)6.3%
Color previews
#166fef text on a black background
contrast 4.55:1
Card sample
#166fef text on a white background
contrast 4.61:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #166fef;
Background color
Panel with #166fef background
background-color: #166fef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #166fef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(22, 111, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(22, 111, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #166fef; background: linear-gradient(135deg, #166fef, #4E16EF);