Get HSL color value based on time value

hsl.js

setInterval(function () {
  'use strict';
  var d = new Date(),
    h = d.getHours(),
    m = d.getMinutes(),
    s = d.getSeconds();
 
  document.body.textContent = [h, m, s].map(function (a) { return a < 10 ? '0' + a : a}).join(':');
  document.body.style.background = 'hsl(' + ~~(s * 6) + ', ' + ~~(m * 10/6) + '%, ' + ~~(h * 25/6) + '%)';

}, 1000);