puyopuyotetr.is/app/javascript/mastodon/components/check.tsx

export const Check: React.FC = () => (
  <svg
    xmlns='http://www.w3.org/2000/svg'
    viewBox='0 0 20 20'
    fill='currentColor'
  >
    <path
      fillRule='evenodd'
      d='M16.704 4.153a.75.75 0 01.143 1.052l-8 10.5a.75.75 0 01-1.127.075l-4.5-4.5a.75.75 0 011.06-1.06l3.894 3.893 7.48-9.817a.75.75 0 011.05-.143z'
      clipRule='evenodd'
    />
  </svg>
);