#1b57b1
a dark, vivid blue · cool · closest name: royalblue
RGB
27, 87, 177
HSL
216°, 74%, 40%
CMYK
85, 51, 0, 31
Luminance
0.1022
Every format
| HEX | #1b57b1 |
| RGB | rgb(27, 87, 177) |
| HSL | hsl(216, 74%, 40%) |
| CMYK | cmyk(85%, 51%, 0%, 31%) |
| LAB | lab(38.2 15.6 -53.1) |
| LCH | lch(38.2 55.4 286.4) |
| OKLCH | oklch(0.473 0.156 259.0) |
Copy-ready code
/* CSS */
color: #1b57b1;
background-color: #1b57b1;
/* Tailwind (arbitrary) */
class="text-[#1b57b1] bg-[#1b57b1]"
/* SCSS */
$brand: #1b57b1;
/* SwiftUI */
Color(red: 0.106, green: 0.341, blue: 0.694)
/* Android */
Color.parseColor("#1b57b1")Accessibility — WCAG contrast
Aa
#1b57b1 on white: 6.90:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#1b57b1 on black: 3.04:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red10.6%
Green34.1%
Blue69.4%
CMYK percentages
Cyan84.7%
Magenta50.8%
Yellow0.0%
Key (black)30.6%
Color previews
#1b57b1 text on a black background
contrast 3.04:1
Card sample
#1b57b1 text on a white background
contrast 6.90:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1b57b1;
Background color
Panel with #1b57b1 background
background-color: #1b57b1;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1b57b1;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(27, 87, 177, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(27, 87, 177, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1b57b1; background: linear-gradient(135deg, #1b57b1, #431BB1);