blockscout/apps/explorer_web/assets/css/components/_dot.scss

%dot {
  display: inline-block;
  height: map-get(map-get($explorer-typography-styles, "body1"), "line-height") / 4;
  width: map-get(map-get($explorer-typography-styles, "body1"), "line-height") / 4;
  line-height: map-get(map-get($explorer-typography-styles, "body1"), "line-height");
  border-radius: 50%;
}

%dot--pending { background-color: explorer-color("gray", "500"); }
%dot--succeeded { background-color: explorer-color("green", "500"); }
%dot--failed { background-color: explorer-color("red", "500"); }
%dot--warned { background-color: explorer-color("yellow", "500"); }