#0f57df
a balanced, electric blue · cool · closest name: royalblue
RGB
15, 87, 223
HSL
219°, 87%, 47%
CMYK
93, 61, 0, 13
Luminance
0.1225
Every format
| HEX | #0f57df |
| RGB | rgb(15, 87, 223) |
| HSL | hsl(219, 87%, 47%) |
| CMYK | cmyk(93%, 61%, 0%, 13%) |
| LAB | lab(41.6 33.0 -74.3) |
| LCH | lch(41.6 81.3 293.9) |
| OKLCH | oklch(0.508 0.218 261.9) |
Copy-ready code
/* CSS */
color: #0f57df;
background-color: #0f57df;
/* Tailwind (arbitrary) */
class="text-[#0f57df] bg-[#0f57df]"
/* SCSS */
$brand: #0f57df;
/* SwiftUI */
Color(red: 0.059, green: 0.341, blue: 0.875)
/* Android */
Color.parseColor("#0f57df")Accessibility — WCAG contrast
Aa
#0f57df on white: 6.09:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0f57df on black: 3.45:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red5.9%
Green34.1%
Blue87.5%
CMYK percentages
Cyan93.3%
Magenta61.0%
Yellow0.0%
Key (black)12.5%
Color previews
#0f57df text on a black background
contrast 3.45:1
Card sample
#0f57df text on a white background
contrast 6.09:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0f57df;
Background color
Panel with #0f57df background
background-color: #0f57df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0f57df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(15, 87, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(15, 87, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0f57df; background: linear-gradient(135deg, #0f57df, #520FDF);