Hello and welcome to Android Forums. Hopefully I can help you with your problem.
Did you have a Google account set up? If so then all your contacts are stored in your Gmail account.
Try signing back into Google Play. If your device is set to sync then your contacts should sync automatically.
If not, there may be a way that a tech can recover your contacts but if you did a true wipe, the chance of recovery is slim.
If you have any other questions regarding your device, I invite you to join Android Forums. We have many sections for specific devices which contain a wealth of information.