Correct

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1=".003"
        x2="511.997"
        y1="256"
        y2="256"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#e921c3" />
        <stop offset=".102" stop-color="#cd29c0" />
        <stop offset=".334" stop-color="#933ab8" />
        <stop offset=".548" stop-color="#6548b3" />
        <stop offset=".738" stop-color="#4452ae" />
        <stop offset=".895" stop-color="#2f58ac" />
        <stop offset="1" stop-color="#285aab" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M256 0C114.8 0 0 114.8 0 256s114.8 256 256 256 256-114.8 256-256S397.2 0 256 0zm0 480C132.5 480 32 379.5 32 256S132.5 32 256 32s224 100.5 224 224-100.5 224-224 224zm123.8-310.3c6.2 6.2 6.2 16.4 0 22.6l-150 150c-3.1 3.1-7.2 4.7-11.3 4.7s-8.2-1.6-11.3-4.7l-75-75c-6.2-6.2-6.2-16.4 0-22.6s16.4-6.2 22.6 0l63.7 63.7 138.7-138.7c6.2-6.3 16.4-6.3 22.6 0z"
    />
</svg>