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Last active February 24, 2024 18:52
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Color Mixing, Tint, Tone, and Shade in PHP
<?php
/**
* mix
*
* @param mixed $color_1
* @param mixed $color_2
* @param mixed $weight
*
* @return void
*/
function mix($color_1 = array(0, 0, 0), $color_2 = array(0, 0, 0), $weight = 0.5)
{
$f = function ($x) use ($weight) {
return $weight * $x;
};
$g = function ($x) use ($weight) {
return (1 - $weight) * $x;
};
$h = function ($x, $y) {
return round($x + $y);
};
return array_map($h, array_map($f, $color_1), array_map($g, $color_2));
}
/**
* tint
*
* @param mixed $color
* @param mixed $weight
*
* @return void
*/
function tint($color, $weight = 0.5)
{
$t = $color;
if (is_string($color)) {
$t = hex2rgb($color);
}
$u = mix($t, array(255, 255, 255), $weight);
if (is_string($color)) {
return rgb2hex($u);
}
return $u;
}
/**
* tone
*
* @param mixed $color
* @param mixed $weight
*
* @return void
*/
function tone($color, $weight = 0.5)
{
$t = $color;
if (is_string($color)) {
$t = hex2rgb($color);
}
$u = mix($t, array(128, 128, 128), $weight);
if (is_string($color)) {
return rgb2hex($u);
}
return $u;
}
/**
* shade
*
* @param mixed $color
* @param mixed $weight
*
* @return void
*/
function shade($color, $weight = 0.5)
{
$t = $color;
if (is_string($color)) {
$t = hex2rgb($color);
}
$u = mix($t, array(0, 0, 0), $weight);
if (is_string($color)) {
return rgb2hex($u);
}
return $u;
}
/**
* hex2rgb
*
* @param mixed $hex
*
* @return void
*/
function hex2rgb($hex = '#000000')
{
$f = function ($x) {
return hexdec($x);
};
return array_map($f, str_split(str_replace("#", "", $hex), 2));
}
/**
* rgb2hex
*
* @param mixed $rgb
*
* @return void
*/
function rgb2hex($rgb = array(0, 0, 0))
{
$f = function ($x) {
return str_pad(dechex($x), 2, "0", STR_PAD_LEFT);
};
return "#" . implode("", array_map($f, $rgb));
}
<?php
include __DIR__ . DIRECTORY_SEPARATOR . "mix_tint_tone_shade.php";
// base color
$base_color = "#67ff34";
print_r($base_color);
echo "\n";
// -----
// test hex2rgb
print_r(hex2rgb($base_color));
echo "\n";
// -----
// test rgb2hex
print_r(rgb2hex(hex2rgb($base_color)));
echo "\n";
// -----
// test tint (hex)
print_r(tint($base_color));
echo "\n";
// test tint (rgb)
print_r(tint(hex2rgb($base_color)));
echo "\n";
// -----
// test tone (hex)
print_r(tone($base_color));
echo "\n";
// test tone (rgb)
print_r(tone(hex2rgb($base_color)));
echo "\n";
// -----
// test shade (hex)
print_r(shade($base_color));
echo "\n";
// test shade (rgb)
print_r(shade(hex2rgb($base_color)));
echo "\n";
// -----
@thegroovetrain
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This was really handy for me in developing an automatic palette generator. I made a couple of modifications to your code, such as reversing the $f and $g anonymous functions of mix so that, for example if you're shading, the weight is the amount of shade (eg 0.2 is 20% shade), as well as condensing $t declarations and return lines in the shade, tone and tint functions into ternary operators. I made a fork in case you're interested. Thanks so much!

@877361
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877361 commented Jan 24, 2024

91 club hack

@877361
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877361 commented Jan 24, 2024

91 club hack

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