How to Customise Salesforce Login page?
Is it possible to customize the Salesforce Login page if an Org is using the My Domain feature?
Login Screen
For example: Custom Logo/Custom Colours /Custom Image on the right side
Yes. you can customize the Salesforce Login page if the org is using My Domain Feature. We can use the custom logo and custom color as well. But for the right side, we can only provide the URL. Refer below link for more info Customize Salesforce Login Page.