<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
  <rect width="512" height="512" rx="96" fill="#059669"/>
  <text x="50%" y="50%" dy="0.35em" text-anchor="middle" font-family="system-ui, sans-serif" font-size="300" font-weight="700" fill="#ffffff">K</text>
</svg>
