#3966eb
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 102, 235
HSL
225°, 82%, 57%
CMYK
76, 57, 0, 8
Luminance
0.1637
Every format
| HEX | #3966eb |
| RGB | rgb(57, 102, 235) |
| HSL | hsl(225, 82%, 57%) |
| CMYK | cmyk(76%, 57%, 0%, 8%) |
| LAB | lab(47.5 30.8 -71.5) |
| LCH | lch(47.5 77.9 293.3) |
| OKLCH | oklch(0.558 0.207 265.7) |
Copy-ready code
/* CSS */
color: #3966eb;
background-color: #3966eb;
/* Tailwind (arbitrary) */
class="text-[#3966eb] bg-[#3966eb]"
/* SCSS */
$brand: #3966eb;
/* SwiftUI */
Color(red: 0.224, green: 0.400, blue: 0.922)
/* Android */
Color.parseColor("#3966eb")Accessibility — WCAG contrast
Aa
#3966eb on white: 4.91:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3966eb on black: 4.27:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green40.0%
Blue92.2%
CMYK percentages
Cyan75.7%
Magenta56.6%
Yellow0.0%
Key (black)7.8%
Color previews
#3966eb text on a black background
contrast 4.27:1
Card sample
#3966eb text on a white background
contrast 4.91:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3966eb;
Background color
Panel with #3966eb background
background-color: #3966eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3966eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 102, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 102, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3966eb; background: linear-gradient(135deg, #3966eb, #8339EB);