#1b3bbc
a dark, vivid blue · warm · closest name: slateblue
RGB
27, 59, 188
HSL
228°, 75%, 42%
CMYK
86, 69, 0, 26
Luminance
0.0699
Every format
| HEX | #1b3bbc |
| RGB | rgb(27, 59, 188) |
| HSL | hsl(228, 75%, 42%) |
| CMYK | cmyk(86%, 69%, 0%, 26%) |
| LAB | lab(31.8 38.4 -70.2) |
| LCH | lch(31.8 80.0 298.7) |
| OKLCH | oklch(0.427 0.204 266.0) |
Copy-ready code
/* CSS */
color: #1b3bbc;
background-color: #1b3bbc;
/* Tailwind (arbitrary) */
class="text-[#1b3bbc] bg-[#1b3bbc]"
/* SCSS */
$brand: #1b3bbc;
/* SwiftUI */
Color(red: 0.106, green: 0.231, blue: 0.737)
/* Android */
Color.parseColor("#1b3bbc")Accessibility — WCAG contrast
Aa
#1b3bbc on white: 8.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#1b3bbc on black: 2.40:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red10.6%
Green23.1%
Blue73.7%
CMYK percentages
Cyan85.6%
Magenta68.6%
Yellow0.0%
Key (black)26.3%
Color previews
#1b3bbc text on a black background
contrast 2.40:1
Card sample
#1b3bbc text on a white background
contrast 8.76:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1b3bbc;
Background color
Panel with #1b3bbc background
background-color: #1b3bbc;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1b3bbc;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(27, 59, 188, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(27, 59, 188, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1b3bbc; background: linear-gradient(135deg, #1b3bbc, #671BBC);