#3f43cf
a balanced, vivid blue · warm · closest name: slateblue
RGB
63, 67, 207
HSL
238°, 60%, 53%
CMYK
70, 68, 0, 19
Luminance
0.0958
Every format
| HEX | #3f43cf |
| RGB | rgb(63, 67, 207) |
| HSL | hsl(238, 60%, 53%) |
| CMYK | cmyk(70%, 68%, 0%, 19%) |
| LAB | lab(37.1 43.3 -72.5) |
| LCH | lch(37.1 84.5 300.9) |
| OKLCH | oklch(0.475 0.210 273.8) |
Copy-ready code
/* CSS */
color: #3f43cf;
background-color: #3f43cf;
/* Tailwind (arbitrary) */
class="text-[#3f43cf] bg-[#3f43cf]"
/* SCSS */
$brand: #3f43cf;
/* SwiftUI */
Color(red: 0.247, green: 0.263, blue: 0.812)
/* Android */
Color.parseColor("#3f43cf")Accessibility — WCAG contrast
Aa
#3f43cf on white: 7.20:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3f43cf on black: 2.92:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green26.3%
Blue81.2%
CMYK percentages
Cyan69.6%
Magenta67.6%
Yellow0.0%
Key (black)18.8%
Color previews
#3f43cf text on a black background
contrast 2.92:1
Card sample
#3f43cf text on a white background
contrast 7.20:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f43cf;
Background color
Panel with #3f43cf background
background-color: #3f43cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f43cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 67, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 67, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f43cf; background: linear-gradient(135deg, #3f43cf, #9B3FCF);