JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div class="parent">
<div class="testing"  style="background-color:rgb(255,193,0)">
Test
</div>
</div>

<div class="parent">
<div class="testing"  style="background-color:rgb(220, 4, 81)">
Test
</div>
</div>


<div class="parent">
<div class="testing"  style="background-color:rgb(0, 186, 76)">
Test
</div>
</div>

JavaScript

$(function(){

$(".testing").each(function(){
   if($(this).css("background-color")=="rgb(255,193,0)"){
     alert("found");
   }
   else{
     alert("not found");
   }
  });

});