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@MaxArt2501 MaxArt2501/_cmyk.scss
Last active Oct 18, 2019

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CMYK helper functions for SASS
@function cmyk_black($color) {
@return 1 - max(red($color), green($color), blue($color)) / 255;
}
@function cmyk_cyan($color) {
$black: cmyk_black($color);
@return if($black < 1, 1 - red($color) / 255 / (1 - $black), 0);
}
@function cmyk_magenta($color) {
$black: cmyk_black($color);
@return if($black < 1, 1 - green($color) / 255 / (1 - $black), 0);
}
@function cmyk_yellow($color) {
$black: cmyk_black($color);
@return if($black < 1, 1 - blue($color) / 255 / (1 - $black), 0);
}
@function cmyk_lighten($color, $amount) {
$black: cmyk_black($color);
$new-black: max(0, min(1, $black + $amount));
$red: (1 - cmyk_cyan($color)) * (1 - $new-black) * 255;
$green: (1 - cmyk_magenta($color)) * (1 - $new-black) * 255;
$blue: (1 - cmyk_yellow($color)) * (1 - $new-black) * 255;
@return rgba($red, $green, $blue, alpha($color));
}
@function cmyk_darken($color, $amount) {
@return cmyk_lighten($color, -$amount);
}
@function cmyk($cyan, $magenta, $yellow, $black) {
$red: (1 - $cyan) * (1 - $black) * 255;
$green: (1 - $magenta) * (1 - $black) * 255;
$blue: (1 - $yellow) * (1 - $black) * 255;
@return rgb($red, $green, $blue);
}
@function cmyka($cyan, $magenta, $yellow, $black, $alpha) {
@return rgba(cmyk($cyan, $magenta, $yellow, $black), $alpha);
}
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