将CMYK颜色值和RGB颜色相互转换的PHP代码_php技巧

function hex2rgb($hex) {
$color = str_replace('#','',$hex);
$rgb = array('r' => hexdec(substr($color,0,2)),
'g' => hexdec(substr($color,2,2)),
'b' => hexdec(substr($color,4,2)));
return $rgb;
} // www.jb51.net

function rgb2cmyk($var1,$g=0,$b=0) {
if (is_array($var1)) {
$r = $var1['r'];
$g = $var1['g'];
$b = $var1['b'];
} else {
$r=$var1;
}
$cyan = 255 - $r;
$magenta = 255 - $g;
$yellow = 255 - $b;
$black = min($cyan, $magenta, $yellow);
$cyan = @(($cyan - $black) / (255 - $black)) * 255;
$magenta = @(($magenta - $black) / (255 - $black)) * 255;
$yellow = @(($yellow - $black) / (255 - $black)) * 255;
return array('c' => $cyan / 255,
'm' => $magenta / 255,
'y' => $yellow / 255,
'k' => $black / 255);
}

$color=rgb2cmyk(hex2rgb('#FF0000'));

以上是小编为您精心准备的的内容，在的博客、问答、公众号、人物、课程等栏目也有的相关内容，欢迎继续使用右上角搜索按钮进行搜索CMYK颜色值
RGB颜色
rgb转cmyk颜色不变、rgb改cmyk颜色不变、cmyk与rgb颜色对照表、ai颜色模式cmyk和rgb、rgb颜色和cmyk颜色，以便于您获取更多的相关知识。