#3f87cf
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 135, 207
HSL
210°, 60%, 53%
CMYK
70, 35, 0, 19
Luminance
0.2289
Every format
| HEX | #3f87cf |
| RGB | rgb(63, 135, 207) |
| HSL | hsl(210, 60%, 53%) |
| CMYK | cmyk(70%, 35%, 0%, 19%) |
| LAB | lab(55.0 1.0 -43.7) |
| LCH | lch(55.0 43.7 271.3) |
| OKLCH | oklch(0.611 0.131 250.8) |
Copy-ready code
/* CSS */
color: #3f87cf;
background-color: #3f87cf;
/* Tailwind (arbitrary) */
class="text-[#3f87cf] bg-[#3f87cf]"
/* SCSS */
$brand: #3f87cf;
/* SwiftUI */
Color(red: 0.247, green: 0.529, blue: 0.812)
/* Android */
Color.parseColor("#3f87cf")Accessibility — WCAG contrast
Aa
#3f87cf on white: 3.76:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3f87cf on black: 5.58:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green52.9%
Blue81.2%
CMYK percentages
Cyan69.6%
Magenta34.8%
Yellow0.0%
Key (black)18.8%
Color previews
#3f87cf text on a black background
contrast 5.58:1
Card sample
#3f87cf text on a white background
contrast 3.76:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f87cf;
Background color
Panel with #3f87cf background
background-color: #3f87cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f87cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 135, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 135, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f87cf; background: linear-gradient(135deg, #3f87cf, #573FCF);