#3f47eb
a balanced, electric blue · warm · closest name: slateblue
RGB
63, 71, 235
HSL
237°, 81%, 58%
CMYK
73, 70, 0, 8
Luminance
0.1156
Every format
| HEX | #3f47eb |
| RGB | rgb(63, 71, 235) |
| HSL | hsl(237, 81%, 58%) |
| CMYK | cmyk(73%, 70%, 0%, 8%) |
| LAB | lab(40.5 50.3 -82.9) |
| LCH | lch(40.5 97.0 301.2) |
| OKLCH | oklch(0.508 0.240 271.9) |
Copy-ready code
/* CSS */
color: #3f47eb;
background-color: #3f47eb;
/* Tailwind (arbitrary) */
class="text-[#3f47eb] bg-[#3f47eb]"
/* SCSS */
$brand: #3f47eb;
/* SwiftUI */
Color(red: 0.247, green: 0.278, blue: 0.922)
/* Android */
Color.parseColor("#3f47eb")Accessibility — WCAG contrast
Aa
#3f47eb on white: 6.34:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f47eb on black: 3.31:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green27.8%
Blue92.2%
CMYK percentages
Cyan73.2%
Magenta69.8%
Yellow0.0%
Key (black)7.8%
Color previews
#3f47eb text on a black background
contrast 3.31:1
Card sample
#3f47eb text on a white background
contrast 6.34:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f47eb;
Background color
Panel with #3f47eb background
background-color: #3f47eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f47eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 71, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 71, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f47eb; background: linear-gradient(135deg, #3f47eb, #AA3FEB);