Use the filled version of icons
mainTabler Icons provides a "filled" version of certain icons. These icons use the fill="currentColor" attribute on their internal paths and typically set stroke-width="0" to achieve a solid look. You can identify these in the library by their naming convention (e.g., icon-tabler-bell-filled).
<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-lg icon-tabler icon-tabler-bell-filled" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
<path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
<path d="M14.235 19c.865 0 1.322 1.024 .745 1.668a3.992 3.992 0 0 1 -2.98 1.332a3.992 3.992 0 0 1 -2.98 -1.332c-.552 -.616 -.158 -1.579 .634 -1.661l.11 -.006h4.471z" stroke-width="0" fill="currentColor"></path>
...
</svg>