generate random color in php and pastel color in javascript

randomcolor_php_js.txt

<?php
function random_color_1(){
    $rand = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
    return '#'.$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)];
}
function random_color_3(){
    return '#'.strtoupper(dechex(rand(0,10000000)));
}
function random_color_2(){
    $spread = 25;
    $r = 0; $g = 0; $b = 0;
    for ($row = 0; $row < 100; ++$row) {
        for($c=0;$c<3;++$c) {
            $color[$c] = rand(0+$spread,255-$spread);
        }
        for($i=0;$i<92;++$i) {
            $r = rand($color[0]-$spread, $color[0]+$spread);
            $g = rand($color[1]-$spread, $color[1]+$spread);
            $b = rand($color[2]-$spread, $color[2]+$spread);
        }
    }
    return "rgb($r,$g,$b)";
}
?>
<script>
var hue = Math.floor(Math.random() * 360);
var pastel = 'hsl(' + hue + ', 100%, 87.5%)';
document.body.style.backgroundColor = pastel;
</script>