#4240cf
a balanced, vivid blue · warm · closest name: slateblue
RGB
66, 64, 207
HSL
241°, 60%, 53%
CMYK
68, 69, 0, 19
Luminance
0.0933
Every format
| HEX | #4240cf |
| RGB | rgb(66, 64, 207) |
| HSL | hsl(241, 60%, 53%) |
| CMYK | cmyk(68%, 69%, 0%, 19%) |
| LAB | lab(36.6 45.5 -73.3) |
| LCH | lch(36.6 86.2 301.8) |
| OKLCH | oklch(0.473 0.213 275.2) |
Copy-ready code
/* CSS */
color: #4240cf;
background-color: #4240cf;
/* Tailwind (arbitrary) */
class="text-[#4240cf] bg-[#4240cf]"
/* SCSS */
$brand: #4240cf;
/* SwiftUI */
Color(red: 0.259, green: 0.251, blue: 0.812)
/* Android */
Color.parseColor("#4240cf")Accessibility — WCAG contrast
Aa
#4240cf on white: 7.33:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#4240cf on black: 2.87:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green25.1%
Blue81.2%
CMYK percentages
Cyan68.1%
Magenta69.1%
Yellow0.0%
Key (black)18.8%
Color previews
#4240cf text on a black background
contrast 2.87:1
Card sample
#4240cf text on a white background
contrast 7.33:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4240cf;
Background color
Panel with #4240cf background
background-color: #4240cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4240cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 64, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 64, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4240cf; background: linear-gradient(135deg, #4240cf, #A140CF);