What are some common methods for obtaining a complementary color in PHP?

To obtain a complementary color in PHP, you can use the RGB color model to calculate the complementary color by subtracting each RGB component from 255. This will give you the complementary color of the original color. 

function getComplementaryColor($color) {
    $r = 255 - $color['r'];
    $g = 255 - $color['g'];
    $b = 255 - $color['b'];
    
    return ['r' => $r, 'g' => $g, 'b' => $b];
}

$originalColor = ['r' => 100, 'g' => 150, 'b' => 200];
$complementaryColor = getComplementaryColor($originalColor);

echo "Original Color: RGB({$originalColor['r']}, {$originalColor['g']}, {$originalColor['b']})" . PHP_EOL;
echo "Complementary Color: RGB({$complementaryColor['r']}, {$complementaryColor['g']}, {$complementaryColor['b']})";

Keywords

PHP color theory complementary color RGB hexadecimal code

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