#1f37df
a balanced, electric blue · warm · closest name: navy
RGB
31, 55, 223
HSL
233°, 76%, 50%
CMYK
86, 75, 0, 13
Luminance
0.0835
Every format
| HEX | #1f37df |
| RGB | rgb(31, 55, 223) |
| HSL | hsl(233, 76%, 50%) |
| CMYK | cmyk(86%, 75%, 0%, 13%) |
| LAB | lab(34.7 53.1 -85.7) |
| LCH | lch(34.7 100.8 301.8) |
| OKLCH | oklch(0.459 0.249 266.9) |
Copy-ready code
/* CSS */
color: #1f37df;
background-color: #1f37df;
/* Tailwind (arbitrary) */
class="text-[#1f37df] bg-[#1f37df]"
/* SCSS */
$brand: #1f37df;
/* SwiftUI */
Color(red: 0.122, green: 0.216, blue: 0.875)
/* Android */
Color.parseColor("#1f37df")Accessibility — WCAG contrast
Aa
#1f37df on white: 7.86:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#1f37df on black: 2.67:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.2%
Green21.6%
Blue87.5%
CMYK percentages
Cyan86.1%
Magenta75.3%
Yellow0.0%
Key (black)12.5%
Color previews
#1f37df text on a black background
contrast 2.67:1
Card sample
#1f37df text on a white background
contrast 7.86:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1f37df;
Background color
Panel with #1f37df background
background-color: #1f37df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1f37df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(31, 55, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(31, 55, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1f37df; background: linear-gradient(135deg, #1f37df, #871FDF);