#3871df
a balanced, vivid blue · cool · closest name: royalblue
RGB
56, 113, 223
HSL
220°, 72%, 55%
CMYK
75, 49, 0, 13
Luminance
0.1798
Every format
| HEX | #3871df |
| RGB | rgb(56, 113, 223) |
| HSL | hsl(220, 72%, 55%) |
| CMYK | cmyk(75%, 49%, 0%, 13%) |
| LAB | lab(49.5 19.4 -61.5) |
| LCH | lch(49.5 64.5 287.5) |
| OKLCH | oklch(0.571 0.179 261.9) |
Copy-ready code
/* CSS */
color: #3871df;
background-color: #3871df;
/* Tailwind (arbitrary) */
class="text-[#3871df] bg-[#3871df]"
/* SCSS */
$brand: #3871df;
/* SwiftUI */
Color(red: 0.220, green: 0.443, blue: 0.875)
/* Android */
Color.parseColor("#3871df")Accessibility — WCAG contrast
Aa
#3871df on white: 4.57:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3871df on black: 4.60:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.0%
Green44.3%
Blue87.5%
CMYK percentages
Cyan74.9%
Magenta49.3%
Yellow0.0%
Key (black)12.5%
Color previews
#3871df text on a black background
contrast 4.60:1
Card sample
#3871df text on a white background
contrast 4.57:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3871df;
Background color
Panel with #3871df background
background-color: #3871df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3871df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(56, 113, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(56, 113, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3871df; background: linear-gradient(135deg, #3871df, #6E38DF);