Code to add a Custom Dashboard Logo

If you want to white label your WordPress admin area?
Adding a custom dashboard logo is the first step in the process.

First you’ll need to upload your custom logo to your theme’s images folder as wpcustom-logo.png and Make sure your custom logo is 16×16 pixels in size.

After that you can add this code to your theme’s functions file.

function wpe_custom_logo() {
echo '<style type="text/css">
#wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon:before {
background-image: url(' . get_bloginfo('stylesheet_directory') . '/images/wpcustom-logo.png) !important;
background-position: 0 0;
color:rgba(0, 0, 0, 0);
}
#wpadminbar #wp-admin-bar-wp-logo.hover > .ab-item .ab-icon{
background-position: 0 0;
}
</style>';
}
//hook into the administrative header output
add_action('wp_before_admin_bar_render', 'wpe_custom_logo');