Takes a hex code as input and returns the name of the color as determined by http://chir.ag/projects/name-that-color/. Runs from the command line. Requires Phantom JS

get-color-name.js

var page   = require('webpage').create();
var system = require('system');

if (system.args.length === 1) {
  console.log('Usage: path/to/get-color-name.js "#FA13CC"');
  phantom.exit();
}

// NOTE
// Hex code must be 6 chars long with an optional
var rxp = new RegExp(/^#[a-fA-F0-9]{6}$/);
var hexCode = system.args[1];
if (!rxp.test(hexCode)) {
  console.log('Invalid hex code');
  phantom.exit();
}


var url = 'http://chir.ag/projects/name-that-color/' + hexCode;

page.onConsoleMessage = function(msg) {
  console.log(msg);
};

console.log("Opening URL: " + url);
page.open(url, function (status) {
  console.log("Page is loaded...");
  console.log("Getting name. This may take a few moments...");

  window.setTimeout(function() {
    var colorName = page.evaluate(function() {
      var element = document.querySelector("h2#colorname");

      if (!element) {
        return "ERROR: The element 'h2#colorname' was missing.";
      }

      var content = element.textContent;

      /**
        NOTE
        Some colors have modifiers. The only two
        I know about right now are:

        solid
        approx
      */
      return content.replace(/(solid|approx\.)$/, '');
    });

    console.log(colorName);

    phantom.exit();
  }, 1000);
});