#3f3fd8
a balanced, vivid blue · warm · closest name: slateblue
RGB
63, 63, 216
HSL
240°, 66%, 55%
CMYK
71, 71, 0, 15
Luminance
0.0957
Every format
| HEX | #3f3fd8 |
| RGB | rgb(63, 63, 216) |
| HSL | hsl(240, 66%, 55%) |
| CMYK | cmyk(71%, 71%, 0%, 15%) |
| LAB | lab(37.1 48.6 -77.7) |
| LCH | lch(37.1 91.7 302.0) |
| OKLCH | oklch(0.478 0.225 273.8) |
Copy-ready code
/* CSS */
color: #3f3fd8;
background-color: #3f3fd8;
/* Tailwind (arbitrary) */
class="text-[#3f3fd8] bg-[#3f3fd8]"
/* SCSS */
$brand: #3f3fd8;
/* SwiftUI */
Color(red: 0.247, green: 0.247, blue: 0.847)
/* Android */
Color.parseColor("#3f3fd8")Accessibility — WCAG contrast
Aa
#3f3fd8 on white: 7.21:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3f3fd8 on black: 2.91:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green24.7%
Blue84.7%
CMYK percentages
Cyan70.8%
Magenta70.8%
Yellow0.0%
Key (black)15.3%
Color previews
#3f3fd8 text on a black background
contrast 2.91:1
Card sample
#3f3fd8 text on a white background
contrast 7.21:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f3fd8;
Background color
Panel with #3f3fd8 background
background-color: #3f3fd8;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f3fd8;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 63, 216, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 63, 216, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f3fd8; background: linear-gradient(135deg, #3f3fd8, #A53FD8);