Random color generator.js

function rand(min, max) {
    return parseInt(Math.random() * (max-min+1), 10) + min;
}

function get_random_color() {
    var h = rand(1, 360); // color hue between 1 and 360
    var s = 58; // saturation 30-100%
    var l = 32; // lightness 30-70%
    return 'hsl(' + h + ',' + s + '%,' + l + '%)';
}

function changeBackground() {
   document.body.style.background = get_random_color();
}