#3f66eb
a balanced, electric blue · warm · closest name: royalblue
RGB
63, 102, 235
HSL
226°, 81%, 58%
CMYK
73, 57, 0, 8
Luminance
0.1656
Every format
| HEX | #3f66eb |
| RGB | rgb(63, 102, 235) |
| HSL | hsl(226, 81%, 58%) |
| CMYK | cmyk(73%, 57%, 0%, 8%) |
| LAB | lab(47.7 31.5 -71.1) |
| LCH | lch(47.7 77.8 293.9) |
| OKLCH | oklch(0.561 0.205 267.0) |
Copy-ready code
/* CSS */
color: #3f66eb;
background-color: #3f66eb;
/* Tailwind (arbitrary) */
class="text-[#3f66eb] bg-[#3f66eb]"
/* SCSS */
$brand: #3f66eb;
/* SwiftUI */
Color(red: 0.247, green: 0.400, blue: 0.922)
/* Android */
Color.parseColor("#3f66eb")Accessibility — WCAG contrast
Aa
#3f66eb on white: 4.87:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f66eb on black: 4.31:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green40.0%
Blue92.2%
CMYK percentages
Cyan73.2%
Magenta56.6%
Yellow0.0%
Key (black)7.8%
Color previews
#3f66eb text on a black background
contrast 4.31:1
Card sample
#3f66eb text on a white background
contrast 4.87:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f66eb;
Background color
Panel with #3f66eb background
background-color: #3f66eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f66eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 102, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 102, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f66eb; background: linear-gradient(135deg, #3f66eb, #8B3FEB);