ԟ SMALL LETTER ALEUT KA UTF-8 character with hex code 051F

Using HEX code of SMALL LETTER ALEUT KA in HTML file

<span> &#x051F; </span>

Using Decimal code of SMALL LETTER ALEUT KA in HTML file

<span> &#1311; </span>

Using HEX code of SMALL LETTER ALEUT KA in CSS file for content

span { 
    content: '\051f';
}