#3f8fdf
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 143, 223
HSL
210°, 71%, 56%
CMYK
72, 36, 0, 13
Luminance
0.2603
Every format
| HEX | #3f8fdf |
| RGB | rgb(63, 143, 223) |
| HSL | hsl(210, 71%, 56%) |
| CMYK | cmyk(72%, 36%, 0%, 13%) |
| LAB | lab(58.1 1.9 -47.8) |
| LCH | lch(58.1 47.8 272.3) |
| OKLCH | oklch(0.638 0.143 251.1) |
Copy-ready code
/* CSS */
color: #3f8fdf;
background-color: #3f8fdf;
/* Tailwind (arbitrary) */
class="text-[#3f8fdf] bg-[#3f8fdf]"
/* SCSS */
$brand: #3f8fdf;
/* SwiftUI */
Color(red: 0.247, green: 0.561, blue: 0.875)
/* Android */
Color.parseColor("#3f8fdf")Accessibility — WCAG contrast
Aa
#3f8fdf on white: 3.38:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3f8fdf on black: 6.21:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green56.1%
Blue87.5%
CMYK percentages
Cyan71.7%
Magenta35.9%
Yellow0.0%
Key (black)12.5%
Color previews
#3f8fdf text on a black background
contrast 6.21:1
Card sample
#3f8fdf text on a white background
contrast 3.38:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f8fdf;
Background color
Panel with #3f8fdf background
background-color: #3f8fdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f8fdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 143, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 143, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f8fdf; background: linear-gradient(135deg, #3f8fdf, #5A3FDF);