JSFiddle - React, Tailwind, and code Playground

by ThiefMaster

CSS

.whatever {
    color: #f0f;
}

JavaScript

function rgb2hex(rgb) {
    rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);

    function hex(x) {
        return ("0" + parseInt(x).toString(16)).slice(-2);
    }
    return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
}

var color = $('<span>', {'class': 'whatever'}).css('color');
alert(color);
alert(rgb2hex(color));