SVG Output

<svg viewBox="0 0 256 256" xmlns="http://www.w3.org/2000/svg">
  <defs><clipPath id="clip"><circle cx="128" cy="128" r="128"/></clipPath></defs>
  <g clip-path="url(#clip)">
    <rect width="256" height="256" fill="hsl(247,62%,53%)"/>
    <text x="128" y="128" text-anchor="middle" dominant-baseline="middle"
      font-family="system-ui,-apple-system,sans-serif" font-weight="700"
      font-size="96" fill="#ffffff">JS</text>
  </g>
</svg>