JSFiddle - React, Tailwind, and code Playground

HTML

<section data-color="#A3D1B5"></section>
<section data-color="#fff"></section>
<section data-color="#000"></section>
<section data-color="#ccc"></section>

CSS

section{
    height:100px;
    width:100%;
    display:block
}

JavaScript

$('section').each(function(){
    $(this).css('background', $(this).attr('data-color'));
});