LiteBlue USPS Official LiteBlueUSPS Gov PortalLite Blue is a user-friendly online platform provided by United States Postal Service. It is created for easy access to staff benefits, calendars, compensation, and more. Using Lite Blue, USPS employees can stay informed about their employment details, connect with colleagues, and handle various HR tasks. Lite Blue USPS aims to optimize USPS operations and establish a more productive work environment.