Customize the ACF color picker in your theme and have it load colors of your liking as swatches

color-palette-addition-acf-color-picker.php

<?php
/**
 * Add brand color palette to acf color picker
 * https://www.advancedcustomfields.com/resources/javascript-api/#filters-color_picker_args
 * 
 */

function kronos_acf_input_admin_footer() {
?>
<script type="text/javascript">
    (function($) {
        acf.add_filter('color_picker_args', function( args, $field ){
            args.palettes = ["#000000","#CCCCCC","#EEEEEE","#FFFFFF","#b9ad33","#4c92af","#79c0a6"]
            return args;
        });
    })(jQuery);
</script>
<?php }
add_action('acf/input/admin_footer', 'kronos_acf_input_admin_footer');