#3f66af
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 102, 175
HSL
219°, 47%, 47%
CMYK
64, 42, 0, 31
Luminance
0.1365
Every format
| HEX | #3f66af |
| RGB | rgb(63, 102, 175) |
| HSL | hsl(219, 47%, 47%) |
| CMYK | cmyk(64%, 42%, 0%, 31%) |
| LAB | lab(43.7 9.9 -43.1) |
| LCH | lch(43.7 44.2 283.0) |
| OKLCH | oklch(0.518 0.124 261.8) |
Copy-ready code
/* CSS */
color: #3f66af;
background-color: #3f66af;
/* Tailwind (arbitrary) */
class="text-[#3f66af] bg-[#3f66af]"
/* SCSS */
$brand: #3f66af;
/* SwiftUI */
Color(red: 0.247, green: 0.400, blue: 0.686)
/* Android */
Color.parseColor("#3f66af")Accessibility — WCAG contrast
Aa
#3f66af on white: 5.63:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f66af on black: 3.73:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green40.0%
Blue68.6%
CMYK percentages
Cyan64.0%
Magenta41.7%
Yellow0.0%
Key (black)31.4%
Color previews
#3f66af text on a black background
contrast 3.73:1
Card sample
#3f66af text on a white background
contrast 5.63:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f66af;
Background color
Panel with #3f66af background
background-color: #3f66af;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f66af;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 102, 175, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 102, 175, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f66af; background: linear-gradient(135deg, #3f66af, #633FAF);