#1b66df
a balanced, electric blue · cool · closest name: royalblue
RGB
27, 102, 223
HSL
217°, 78%, 49%
CMYK
88, 54, 0, 13
Luminance
0.1506
Every format
| HEX | #1b66df |
| RGB | rgb(27, 102, 223) |
| HSL | hsl(217, 78%, 49%) |
| CMYK | cmyk(88%, 54%, 0%, 13%) |
| LAB | lab(45.7 23.8 -67.6) |
| LCH | lch(45.7 71.7 289.4) |
| OKLCH | oklch(0.540 0.198 260.2) |
Copy-ready code
/* CSS */
color: #1b66df;
background-color: #1b66df;
/* Tailwind (arbitrary) */
class="text-[#1b66df] bg-[#1b66df]"
/* SCSS */
$brand: #1b66df;
/* SwiftUI */
Color(red: 0.106, green: 0.400, blue: 0.875)
/* Android */
Color.parseColor("#1b66df")Accessibility — WCAG contrast
Aa
#1b66df on white: 5.23:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#1b66df on black: 4.01:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red10.6%
Green40.0%
Blue87.5%
CMYK percentages
Cyan87.9%
Magenta54.3%
Yellow0.0%
Key (black)12.5%
Color previews
#1b66df text on a black background
contrast 4.01:1
Card sample
#1b66df text on a white background
contrast 5.23:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1b66df;
Background color
Panel with #1b66df background
background-color: #1b66df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1b66df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(27, 102, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(27, 102, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1b66df; background: linear-gradient(135deg, #1b66df, #531BDF);