chromium/ash/webui/personalization_app/resources/js/theme/color_scheme_icon_svg_element.html

<style>
    .crisp {
        shape-rendering: crispEdges;
    }
</style>

<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48" fill="none">
    <path fill$="[[getHexColor_(scheme.primary)]]" d="M0 24C0 10.75 10.75 0 24 0C37.25 0 48 10.75 48 24Z"></path>
    <path class="crisp" fill$="[[getHexColor_(scheme.primary)]]" d="M0 24L24 12L48 24Z"></path>
    <path fill$="[[getHexColor_(scheme.secondary)]]" d="M48 24C48 37.25 37.25 48 24 48V24Z"></path>
    <path class="crisp" fill$="[[getHexColor_(scheme.secondary)]]" d="M49 24L24 49V24Z"></path>
    <path fill$="[[getHexColor_(scheme.tertiary)]]" d="M0 24C0 37.25 10.75 48 24 48V24Z"></path>
    <path class="crisp" fill$="[[getHexColor_(scheme.tertiary)]]" d="M0 24L24 48V24Z"></path>
</svg>