Owlpixel

This plugin comes with a lot of feature specially for login page of wordpress. 
Custom background for login page, Custom background for login form, Change all the color of login page. All of this can be done with this plugin. 
Admin login page customization never being easy without this plugin. 
You can change admin page background, login page background, custom logo etc. 
You can see your login page by adding slug “wp-login” or “wp-admin” after your domain…
All can be done with this –>
<pre><code>* Upload custom logo to admin page
* Customize background image of admin page area
* Customize background image of admin login form area
* Change background color of login page
* Change background color of login form
* Change color of label for fields
* Change color of nav link bottom of form
* Change the color of submit button
* Change the color of submit button text
* Add custom css
* More are coming soon...
</code></pre>
<h3>Video Tutorial</h3>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/Ri_d1OmnbfU?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

Custom login page

Custom login page Customizer, Add custom logo,Custom background and more.

Subodh Ghulaxe

Change Login Page Logo lets you change the default WordPress login page logo image. It also allows you to change logo width, logo height, bottom margin of logo and logo URL.
By default WordPress add its own logo to the login page. If you are sharing the login URL with users, subscribers or even your own team members, it makes sense to have your own branding and change default login logo.
Features include:
<ul>
<li>Change Login Logo Image. Select image from WordPress media or use external image</li>
<li>Customize Logo Image Width. Logo width in pixel</li>
<li>Customize Logo Image Height. Logo height in pixel</li>
<li>Customize Logo Bottom Margin. Adjust the spacing between logo and login form</li>
<li>Change Logo Link. This link will open on the click of logo</li>
</ul>
Translations/Languages: 
This plugin is translation ready and is available in the following languages:
<ul>
<li>English</li>
</ul>

Change Login Page Logo

Verified plugin with WordPress 5.7 version.

Working perfectly with WordPress 5.7

A simple and easy way to change WordPress login logo, using Change Login Page Logo plugin you can change logo image, logo width, height and logo URL.

Custom login page vs Change Login Page Logo