🛑 Octagon UTF-8 character with hex code 1F6D1

Using HEX code of Octagon in HTML file

<span> &#x1F6D1; </span>

Using Decimal code of Octagon in HTML file

<span> &#128721; </span>

Using HEX code of Octagon in CSS file for content

span { 
    content: '\1f6d1';
}