JSFiddle - React, Tailwind, and code Playground

HTML

<p id="myP">This is an example paragraph.</p>

<button type="button" onclick="myFunction()">Return text color of p</button>
<script>

function myFunction() {
var element = document.getElementById('myP'),
    style = window.getComputedStyle(element),
    color = style.getPropertyValue('color');
alert(color);
}
</script>

CSS

#myP {
  color: pink;
}