From: D74739
Calculated: f9e3e1
Should be: F9E3E1
<?php
function changeBrightness($hex, $procent) {
$rgb = array(
'r' => hexdec(substr($hex, 0, 2)),
'g' => hexdec(substr($hex, 2, 2)),
'b' => hexdec(substr($hex, 4, 2))
);
$hex = array();
foreach($rgb as &$color) {
$color += $procent / 100 * ( 255 - $color);
if( $color > 255 ) {
$color = 255;
} elseif( $color < 0 ) {
$color = 0;
}
$hex []= $color < 10 ? '0'.$color : dechex($color);
}
return implode('', $hex);
}
$hex = changeBrightness('D74739', 85);
echo '<div style="width:100px;height:100px;background:#D74739;">From: D74739</div>';
echo '<div style="width:100px;height:100px;background:#', $hex ,';">Calculated: ', $hex ,'</div>';
echo '<div style="width:100px;height:100px;background:#F9E3E1;">Should be: F9E3E1</div>';
highlight_file(__FILE__);