src/resources/images/flags/1x1/lu.svg
<svg xmlns="http://www.w3.org/2000/svg" height="512" width="512"><g fill-rule="evenodd"><path fill="red" d="M0 0h511.993v171.39H0z"/><path fill="#fff" d="M0 171.39h511.993v171.587H0z"/><path fill="#0098ff" d="M0 342.977h511.993v169.007H0z"/></g></svg>