Change WordPress Logo in Login Page
<?php
//Change login logo
function my_login_logo() { ?>
<style type="text/css">
body {
background: none repeat scroll 0 0 #5d7f95;
}
body.login div#login h1 a {
background-image: url(<?php echo get_stylesheet_directory_uri(); ?>/images/sage-members-login-white.png);
padding-bottom: 0;
height: 73px;
width: 160px;
background-size: 160px 73px;
}
.login #backtoblog a, .login #nav a {
color: #fff;
text-decoration: none;
}
.wp-core-ui .button-primary {
background: none repeat scroll 0 0 #5d7f95;
}
</style>
<?php }
add_action( 'login_enqueue_scripts', 'my_login_logo' );