#1237b8
a dark, electric blue · warm · closest name: slateblue
RGB
18, 55, 184
HSL
227°, 82%, 40%
CMYK
90, 70, 0, 28
Luminance
0.0632
Every format
| HEX | #1237b8 |
| RGB | rgb(18, 55, 184) |
| HSL | hsl(227, 82%, 40%) |
| CMYK | cmyk(90%, 70%, 0%, 28%) |
| LAB | lab(30.2 38.9 -70.4) |
| LCH | lch(30.2 80.5 298.9) |
| OKLCH | oklch(0.414 0.205 265.0) |
Copy-ready code
/* CSS */
color: #1237b8;
background-color: #1237b8;
/* Tailwind (arbitrary) */
class="text-[#1237b8] bg-[#1237b8]"
/* SCSS */
$brand: #1237b8;
/* SwiftUI */
Color(red: 0.071, green: 0.216, blue: 0.722)
/* Android */
Color.parseColor("#1237b8")Accessibility — WCAG contrast
Aa
#1237b8 on white: 9.27:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#1237b8 on black: 2.26:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red7.1%
Green21.6%
Blue72.2%
CMYK percentages
Cyan90.2%
Magenta70.1%
Yellow0.0%
Key (black)27.8%
Color previews
#1237b8 text on a black background
contrast 2.26:1
Card sample
#1237b8 text on a white background
contrast 9.27:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1237b8;
Background color
Panel with #1237b8 background
background-color: #1237b8;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1237b8;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(18, 55, 184, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(18, 55, 184, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1237b8; background: linear-gradient(135deg, #1237b8, #5C12B8);