#3f9fdf
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 159, 223
HSL
204°, 71%, 56%
CMYK
72, 29, 0, 13
Luminance
0.3118
Every format
| HEX | #3f9fdf |
| RGB | rgb(63, 159, 223) |
| HSL | hsl(204, 71%, 56%) |
| CMYK | cmyk(72%, 29%, 0%, 13%) |
| LAB | lab(62.7 -7.3 -40.5) |
| LCH | lch(62.7 41.1 259.8) |
| OKLCH | oklch(0.674 0.130 241.8) |
Copy-ready code
/* CSS */
color: #3f9fdf;
background-color: #3f9fdf;
/* Tailwind (arbitrary) */
class="text-[#3f9fdf] bg-[#3f9fdf]"
/* SCSS */
$brand: #3f9fdf;
/* SwiftUI */
Color(red: 0.247, green: 0.624, blue: 0.875)
/* Android */
Color.parseColor("#3f9fdf")Accessibility — WCAG contrast
Aa
#3f9fdf on white: 2.90:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#3f9fdf on black: 7.24:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green62.4%
Blue87.5%
CMYK percentages
Cyan71.7%
Magenta28.7%
Yellow0.0%
Key (black)12.5%
Color previews
#3f9fdf text on a black background
contrast 7.24:1
Card sample
#3f9fdf text on a white background
contrast 2.90:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f9fdf;
Background color
Panel with #3f9fdf background
background-color: #3f9fdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f9fdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 159, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 159, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f9fdf; background: linear-gradient(135deg, #3f9fdf, #4A3FDF);