#3f71af
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 113, 175
HSL
213°, 47%, 47%
CMYK
64, 35, 0, 31
Luminance
0.1596
Every format
| HEX | #3f71af |
| RGB | rgb(63, 113, 175) |
| HSL | hsl(213, 47%, 47%) |
| CMYK | cmyk(64%, 35%, 0%, 31%) |
| LAB | lab(46.9 3.1 -38.0) |
| LCH | lch(46.9 38.1 274.6) |
| OKLCH | oklch(0.543 0.112 254.8) |
Copy-ready code
/* CSS */
color: #3f71af;
background-color: #3f71af;
/* Tailwind (arbitrary) */
class="text-[#3f71af] bg-[#3f71af]"
/* SCSS */
$brand: #3f71af;
/* SwiftUI */
Color(red: 0.247, green: 0.443, blue: 0.686)
/* Android */
Color.parseColor("#3f71af")Accessibility — WCAG contrast
Aa
#3f71af on white: 5.01:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3f71af on black: 4.19:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green44.3%
Blue68.6%
CMYK percentages
Cyan64.0%
Magenta35.4%
Yellow0.0%
Key (black)31.4%
Color previews
#3f71af text on a black background
contrast 4.19:1
Card sample
#3f71af text on a white background
contrast 5.01:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f71af;
Background color
Panel with #3f71af background
background-color: #3f71af;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f71af;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 113, 175, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 113, 175, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f71af; background: linear-gradient(135deg, #3f71af, #583FAF);