How to change the default logout link on WordPress Admin

I want to use another link for logout because I have /wp-admin/* protected with htpassword. Is there a way to do this? Something like creating a custom page like site.com/logout then use it as my new logout link?

Thanks!

You can filter 'logout_url' and return a custom value if you are in the admin area:

add_filter( 'logout_url', 'wpse_58453_logout_url' );
function wpse_58453_logout_url( $default ) 
{
    // set your URL here
    return is_admin() ? 'http://example.com/custom' : $default;
}