Equilibrium

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="256"
        x2="256"
        y1="301"
        y2="211"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#ffbef9" />
        <stop offset="1" stop-color="#fff1ff" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="256"
        x2="256"
        y1="451"
        y2="61"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#a93aff" />
        <stop offset="1" stop-color="#ff81ff" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M497 211H15c-8.284 0-15 6.716-15 15v60c0 8.284 6.716 15 15 15h482c8.284 0 15-6.716 15-15v-60c0-8.284-6.716-15-15-15z"
    />
    <path
        fill="url(#b)"
        d="M266.606 305.394c-5.857-5.858-15.355-5.858-21.213 0l-120 120A15 15 0 0 0 136 451h240a15 15 0 0 0 10.606-25.607zM150 136c0-41.355-33.645-75-75-75S0 94.645 0 136s33.645 75 75 75 75-33.645 75-75zm287-75c-41.355 0-75 33.645-75 75s33.645 75 75 75 75-33.645 75-75-33.645-75-75-75z"
    />
</svg>