All Octicons
bell-fill
Octicon sizes navigation
React
import {BellFillIcon} from '@primer/octicons-react' <BellFillIcon size={16} />
Rails
<%= render(Primer::Beta::Octicon.new(:"bell-fill", size: :small)) %>
Jekyll
{% octicon bell-fill height:16 %}
Figma
This icon is called bell-fill
in Primer's Octicons library.