#0307df
a dark, electric blue · warm · closest name: blue
RGB
3, 7, 223
HSL
239°, 97%, 44%
CMYK
99, 97, 0, 13
Luminance
0.0550
Every format
| HEX | #0307df |
| RGB | rgb(3, 7, 223) |
| HSL | hsl(239, 97%, 44%) |
| CMYK | cmyk(99%, 97%, 0%, 13%) |
| LAB | lab(28.1 70.3 -96.7) |
| LCH | lch(28.1 119.5 306.0) |
| OKLCH | oklch(0.412 0.281 264.4) |
Copy-ready code
/* CSS */
color: #0307df;
background-color: #0307df;
/* Tailwind (arbitrary) */
class="text-[#0307df] bg-[#0307df]"
/* SCSS */
$brand: #0307df;
/* SwiftUI */
Color(red: 0.012, green: 0.027, blue: 0.875)
/* Android */
Color.parseColor("#0307df")Accessibility — WCAG contrast
Aa
#0307df on white: 10.00:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0307df on black: 2.10:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.2%
Green2.7%
Blue87.5%
CMYK percentages
Cyan98.7%
Magenta96.9%
Yellow0.0%
Key (black)12.5%
Color previews
#0307df text on a black background
contrast 2.10:1
Card sample
#0307df text on a white background
contrast 10.00:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0307df;
Background color
Panel with #0307df background
background-color: #0307df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0307df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(3, 7, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(3, 7, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0307df; background: linear-gradient(135deg, #0307df, #9203DF);