#3f45ba
a balanced, vivid blue · warm · closest name: slateblue
RGB
63, 69, 186
HSL
237°, 49%, 49%
CMYK
66, 63, 0, 27
Luminance
0.0886
Every format
| HEX | #3f45ba |
| RGB | rgb(63, 69, 186) |
| HSL | hsl(237, 49%, 49%) |
| CMYK | cmyk(66%, 63%, 0%, 27%) |
| LAB | lab(35.7 35.0 -62.5) |
| LCH | lch(35.7 71.6 299.2) |
| OKLCH | oklch(0.460 0.181 274.5) |
Copy-ready code
/* CSS */
color: #3f45ba;
background-color: #3f45ba;
/* Tailwind (arbitrary) */
class="text-[#3f45ba] bg-[#3f45ba]"
/* SCSS */
$brand: #3f45ba;
/* SwiftUI */
Color(red: 0.247, green: 0.271, blue: 0.729)
/* Android */
Color.parseColor("#3f45ba")Accessibility — WCAG contrast
Aa
#3f45ba on white: 7.58:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3f45ba on black: 2.77:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green27.1%
Blue72.9%
CMYK percentages
Cyan66.1%
Magenta62.9%
Yellow0.0%
Key (black)27.1%
Color previews
#3f45ba text on a black background
contrast 2.77:1
Card sample
#3f45ba text on a white background
contrast 7.58:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f45ba;
Background color
Panel with #3f45ba background
background-color: #3f45ba;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f45ba;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 69, 186, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 69, 186, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f45ba; background: linear-gradient(135deg, #3f45ba, #8B3FBA);