The Braille Pattern Dots-2456 symbol (⠺). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Braille.
The quickest way is to copy ⠺ from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
⠺ is U+283A (decimal 10298).
Use ⠺ in HTML to render ⠺ on a web page.
On Windows you can type it with Alt+10298 (hold Alt and enter the number on the numeric keypad).
Yes — copying is completely free and unlimited, and works right in your browser with no sign-up.