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PHP function to convert Hex to HSL
The below code can be used to convert hex value into HSL value −
function hex_To_Hsl($hex) {
$hex_val = array($hex_val[0].$hex_val[1], $hex_val[2].$hex_val[3], $hex_val[4].$hex_val[5]);
$rgb_val = array_map(function($part) {
return hexdec($part) / 255;
}, $hex_val);
$max_val = max($rgb_val);
$min_val = min($rgb_val);
$l = ($max_val + $min_val) / 2;
if ($max_val == $min_val) {
$h = $s = 0;
} else {
$diff = $max_val - $min_val;
$s = $l > 0.5 ? $diff / (2 - $max_val - $min_val) : $diff / ($max_val + $min_val);
switch($max_val) {
case $rgb_val[0]:
$h = ($rgb_val[1] - $rgb_val[2]) / $diff + ($rgb_val[1] < $rgb_val[2] ? 6 : 0);
break;
case $rgb_val[1]:
$h = ($rgb_val[2] - $rgb_val[0]) / $diff + 2;
break;
case $rgb_val[2]:
$h = ($rgb_val[0] - $rgb_val[1]) / $diff + 4;
break;
}
$h /= 6;
}
return array($h, $s, $l);
}
Updated on: 06-Apr-2020
302 Views
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