Stop Button

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <g fill-rule="evenodd" clip-rule="evenodd">
        <path
            fill="#525463"
            d="M256 12.9C122 12.9 12.9 122 12.9 256S122 499.1 256 499.1 499.1 390 499.1 256 390 12.9 256 12.9z"
        />
        <path
            fill="#ef5350"
            d="M161.2 125.9c-19.5 0-35.3 15.9-35.3 35.3v189.5c0 19.5 15.9 35.3 35.3 35.3h189.5c19.5 0 35.3-15.9 35.3-35.3V161.2c0-19.5-15.9-35.3-35.3-35.3z"
        />
        <path
            d="M256 512C114.8 512 0 397.2 0 256S114.8 0 256 0s256 114.8 256 256-114.8 256-256 256zm0-496C123.7 16 16 123.7 16 256s107.7 240 240 240 240-107.7 240-240S388.3 16 256 16zm92.5 383h-185c-27.8 0-50.5-22.7-50.5-50.5v-185c0-27.8 22.7-50.5 50.5-50.5h185c27.8 0 50.5 22.7 50.5 50.5v185c0 27.9-22.6 50.5-50.5 50.5zm-185-270c-19 0-34.5 15.5-34.5 34.5v185c0 19 15.5 34.5 34.5 34.5h185c19 0 34.5-15.5 34.5-34.5v-185c0-19-15.5-34.5-34.5-34.5z"
        />
    </g>
</svg>