#3f9bdf
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 155, 223
HSL
206°, 71%, 56%
CMYK
72, 31, 0, 13
Luminance
0.2983
Every format
| HEX | #3f9bdf |
| RGB | rgb(63, 155, 223) |
| HSL | hsl(206, 71%, 56%) |
| CMYK | cmyk(72%, 31%, 0%, 13%) |
| LAB | lab(61.5 -5.0 -42.3) |
| LCH | lch(61.5 42.6 263.2) |
| OKLCH | oklch(0.665 0.133 244.3) |
Copy-ready code
/* CSS */
color: #3f9bdf;
background-color: #3f9bdf;
/* Tailwind (arbitrary) */
class="text-[#3f9bdf] bg-[#3f9bdf]"
/* SCSS */
$brand: #3f9bdf;
/* SwiftUI */
Color(red: 0.247, green: 0.608, blue: 0.875)
/* Android */
Color.parseColor("#3f9bdf")Accessibility — WCAG contrast
Aa
#3f9bdf on white: 3.01:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3f9bdf on black: 6.97:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green60.8%
Blue87.5%
CMYK percentages
Cyan71.7%
Magenta30.5%
Yellow0.0%
Key (black)12.5%
Color previews
#3f9bdf text on a black background
contrast 6.97:1
Card sample
#3f9bdf text on a white background
contrast 3.01:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f9bdf;
Background color
Panel with #3f9bdf background
background-color: #3f9bdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f9bdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 155, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 155, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f9bdf; background: linear-gradient(135deg, #3f9bdf, #4E3FDF);