PhpSpreadsheet/tests/data/Style/ColorGetRed.php

<?php

return [
    // RGBA (hex)
    [
        'FFAABBCC',
        'AA',
    ],
    // RGBA (decimal)
    [
        'FFAABBCC',
        false,
        170,
    ],
    // RGB (hex)
    [
        'AABBCC',
        'AA',
    ],
    // RGB (decimal)
    [
        'AABBCC',
        false,
        170,
    ],
    [
        '00FFFF',
        '00',
    ],
    [
        '00FFFF',
        false,
        0,
    ],
];