#3f4fef
a balanced, electric blue · warm · closest name: slateblue
RGB
63, 79, 239
HSL
235°, 85%, 59%
CMYK
74, 67, 0, 6
Luminance
0.1288
Every format
| HEX | #3f4fef |
| RGB | rgb(63, 79, 239) |
| HSL | hsl(235, 85%, 59%) |
| CMYK | cmyk(74%, 67%, 0%, 6%) |
| LAB | lab(42.6 47.0 -81.7) |
| LCH | lch(42.6 94.3 299.9) |
| OKLCH | oklch(0.524 0.236 270.9) |
Copy-ready code
/* CSS */
color: #3f4fef;
background-color: #3f4fef;
/* Tailwind (arbitrary) */
class="text-[#3f4fef] bg-[#3f4fef]"
/* SCSS */
$brand: #3f4fef;
/* SwiftUI */
Color(red: 0.247, green: 0.310, blue: 0.937)
/* Android */
Color.parseColor("#3f4fef")Accessibility — WCAG contrast
Aa
#3f4fef on white: 5.87:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f4fef on black: 3.58:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green31.0%
Blue93.7%
CMYK percentages
Cyan73.6%
Magenta66.9%
Yellow0.0%
Key (black)6.3%
Color previews
#3f4fef text on a black background
contrast 3.58:1
Card sample
#3f4fef text on a white background
contrast 5.87:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f4fef;
Background color
Panel with #3f4fef background
background-color: #3f4fef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f4fef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 79, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 79, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f4fef; background: linear-gradient(135deg, #3f4fef, #A43FEF);