#3f99cf
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 153, 207
HSL
203°, 60%, 53%
CMYK
70, 26, 0, 19
Luminance
0.2834
Every format
| HEX | #3f99cf |
| RGB | rgb(63, 153, 207) |
| HSL | hsl(203, 60%, 53%) |
| CMYK | cmyk(70%, 26%, 0%, 19%) |
| LAB | lab(60.2 -9.4 -35.5) |
| LCH | lch(60.2 36.7 255.2) |
| OKLCH | oklch(0.652 0.117 238.7) |
Copy-ready code
/* CSS */
color: #3f99cf;
background-color: #3f99cf;
/* Tailwind (arbitrary) */
class="text-[#3f99cf] bg-[#3f99cf]"
/* SCSS */
$brand: #3f99cf;
/* SwiftUI */
Color(red: 0.247, green: 0.600, blue: 0.812)
/* Android */
Color.parseColor("#3f99cf")Accessibility — WCAG contrast
Aa
#3f99cf on white: 3.15:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3f99cf on black: 6.67:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green60.0%
Blue81.2%
CMYK percentages
Cyan69.6%
Magenta26.1%
Yellow0.0%
Key (black)18.8%
Color previews
#3f99cf text on a black background
contrast 6.67:1
Card sample
#3f99cf text on a white background
contrast 3.15:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f99cf;
Background color
Panel with #3f99cf background
background-color: #3f99cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f99cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 153, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 153, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f99cf; background: linear-gradient(135deg, #3f99cf, #453FCF);