#3f63af
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 99, 175
HSL
221°, 47%, 47%
CMYK
64, 43, 0, 31
Luminance
0.1308
Every format
| HEX | #3f63af |
| RGB | rgb(63, 99, 175) |
| HSL | hsl(221, 47%, 47%) |
| CMYK | cmyk(64%, 43%, 0%, 31%) |
| LAB | lab(42.9 11.8 -44.5) |
| LCH | lch(42.9 46.0 284.9) |
| OKLCH | oklch(0.511 0.128 263.5) |
Copy-ready code
/* CSS */
color: #3f63af;
background-color: #3f63af;
/* Tailwind (arbitrary) */
class="text-[#3f63af] bg-[#3f63af]"
/* SCSS */
$brand: #3f63af;
/* SwiftUI */
Color(red: 0.247, green: 0.388, blue: 0.686)
/* Android */
Color.parseColor("#3f63af")Accessibility — WCAG contrast
Aa
#3f63af on white: 5.81:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f63af on black: 3.62:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green38.8%
Blue68.6%
CMYK percentages
Cyan64.0%
Magenta43.4%
Yellow0.0%
Key (black)31.4%
Color previews
#3f63af text on a black background
contrast 3.62:1
Card sample
#3f63af text on a white background
contrast 5.81:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f63af;
Background color
Panel with #3f63af background
background-color: #3f63af;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f63af;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 99, 175, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 99, 175, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f63af; background: linear-gradient(135deg, #3f63af, #663FAF);