Permission denied (publickey) for SSH login on new droplet. Unable to login

Created a new account. Created SSH keys on local machine under a root secured password. Added newly created SSH key under Security -> Add SSH keys. Created a new droplet. Installed one-click wordpress.

When I am trying to login via SSH I am getting an error saying Permission denied (publickey)

~$ ssh root@xxx.xxx.xxx.xxx

The authenticity of host ‘xxx.xxx.xxx.xxx’ can’t be established.

ECDSA key fingerprint is…

Are you sure you want to continue connecting (yes/no)? y

Please type ‘yes’ or ‘no’: yes

Warning: Permanently added ‘xxx.xxx.xxx.xxx’ (ECDSA) to the list of known hosts.

root@xxx.xxx.xxx.xxx: Permission denied (publickey).