#306df3
a balanced, electric blue · cool · closest name: royalblue
RGB
48, 109, 243
HSL
221°, 89%, 57%
CMYK
80, 55, 0, 5
Luminance
0.1804
Every format
| HEX | #306df3 |
| RGB | rgb(48, 109, 243) |
| HSL | hsl(221, 89%, 57%) |
| CMYK | cmyk(80%, 55%, 0%, 5%) |
| LAB | lab(49.5 28.4 -72.6) |
| LCH | lch(49.5 78.0 291.4) |
| OKLCH | oklch(0.575 0.211 263.0) |
Copy-ready code
/* CSS */
color: #306df3;
background-color: #306df3;
/* Tailwind (arbitrary) */
class="text-[#306df3] bg-[#306df3]"
/* SCSS */
$brand: #306df3;
/* SwiftUI */
Color(red: 0.188, green: 0.427, blue: 0.953)
/* Android */
Color.parseColor("#306df3")Accessibility — WCAG contrast
Aa
#306df3 on white: 4.56:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#306df3 on black: 4.61:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red18.8%
Green42.7%
Blue95.3%
CMYK percentages
Cyan80.2%
Magenta55.1%
Yellow0.0%
Key (black)4.7%
Color previews
#306df3 text on a black background
contrast 4.61:1
Card sample
#306df3 text on a white background
contrast 4.56:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #306df3;
Background color
Panel with #306df3 background
background-color: #306df3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #306df3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(48, 109, 243, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(48, 109, 243, 0.45);
Border & gradient
Gradient panel
border: 3px solid #306df3; background: linear-gradient(135deg, #306df3, #7530F3);