PHP code example of davidgorges / color-contrast

1. Go to this page and download the library: Download davidgorges/color-contrast library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

davidgorges / color-contrast example snippets


    use ColorContrast\ColorContrast;

    /* ... */
    
    $contrast = new ColorContrast();
    $contrast->addColors(0xff0000, 0x002200, 0x0022ff, 0xffffff);
    $combinations = $contrast->getCombinations(ColorContrast::MIN_CONTRAST_AAA);
    foreach ($combinations as $combination) {
        printf("#%s on the Background color #%s has a contrast value of %f \n", $combination->getForeground(), $combination->getBackground(), $combination->getContrast());
    }


    $contrast = new ColorContrast();
    
    // imagine having a red background and you need to know if its better
    // to display a white or black text on top if it
    $complimentary = $contrast->complimentaryTheme('#d80000'); // returns ColorContrast::DARK to indicate you should use a dark color on this background
    
    if($complimentary == ColorContrast::LIGHT) {
        // Use a light font
    } else {
        // use a dark font
    }