#166cfd
a balanced, electric blue · cool · closest name: royalblue
RGB
22, 108, 253
HSL
218°, 98%, 54%
CMYK
91, 57, 0, 1
Luminance
0.1799
Every format
| HEX | #166cfd |
| RGB | rgb(22, 108, 253) |
| HSL | hsl(218, 98%, 54%) |
| CMYK | cmyk(91%, 57%, 0%, 1%) |
| LAB | lab(49.5 31.2 -78.3) |
| LCH | lch(49.5 84.3 291.7) |
| OKLCH | oklch(0.575 0.230 260.9) |
Copy-ready code
/* CSS */
color: #166cfd;
background-color: #166cfd;
/* Tailwind (arbitrary) */
class="text-[#166cfd] bg-[#166cfd]"
/* SCSS */
$brand: #166cfd;
/* SwiftUI */
Color(red: 0.086, green: 0.424, blue: 0.992)
/* Android */
Color.parseColor("#166cfd")Accessibility — WCAG contrast
Aa
#166cfd on white: 4.57:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#166cfd on black: 4.60:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red8.6%
Green42.4%
Blue99.2%
CMYK percentages
Cyan91.3%
Magenta57.3%
Yellow0.0%
Key (black)0.8%
Color previews
#166cfd text on a black background
contrast 4.60:1
Card sample
#166cfd text on a white background
contrast 4.57:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #166cfd;
Background color
Panel with #166cfd background
background-color: #166cfd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #166cfd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(22, 108, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(22, 108, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #166cfd; background: linear-gradient(135deg, #166cfd, #5A16FD);