Whole new LiteBlue Lite Blue is a user-friendly online platform provided by United States Postal Service. It is developed for trouble-free access to employee benefits, calendars, payroll, and more. Using BlueLite, USPS employees can stay well-informed about their job details, connect with colleagues, and organize various HR tasks. Liteblue USPS aims to streamline USPS operations and create a more productive work environment.