color.js

const puppeteer = require('puppeteer');
const getColors = require('get-image-colors');

(async() => {
    try {
      // Initialize browser and page
      const browser = await puppeteer.launch({args: ['--no-sandbox']});
      const page = await browser.newPage();
      
      // Open required page and set viewport to process desktop view of website
      await page.goto(url, {waitUntil: 'load'});
      
      // Taking full page screenshot without background color
      const fullpageSS = await page.screenshot({
        fullPage: true,
        omitBackground: true,
        type: 'jpeg',
        quality: 100
      });
      
      // Extracting color
      const colors = await getColors(fullPageSS, 'image/jpeg');
    }
});