JSFiddle - React, Tailwind, and code Playground

HTML

<div class="colors"></div>

CSS

.colors > div{width:30px; height:30px;}

JavaScript

function get_random_color() {
	return '#' + Math.floor((Math.random() * 0xF00000) + 0x0FFFFF).toString(16);
}

for (var i=0; i<5; i++)
  {
      $(".colors").append("<div style='background:"+get_random_color()+"'></div>");
  }