Customize WordPress Admin Color Scheme

Register Admin Color Schemes

function additional_admin_color_schemes() {
	//Get the theme directory
	$theme_dir = get_template_directory_uri();

	//Ocean
	wp_admin_css_color( 'ocean', __( 'Ocean' ),
		$theme_dir . '/admin-colors/ocean/colors.min.css',
		array( '#aa9d88', '#9ebaa0', '#738e96', '#f2fcff' )
	);
}
add_action('admin_init', 'additional_admin_color_schemes');