The coat color of the puppies will depend on the genetic inheritance from both the blue bitch and the red male. Blue coat color in dogs is typically a dilution of black, while red is a form of a diluted fawn or tan. The specific combination will likely result in a range of coat colors in the puppies, such as blue, red, and possibly fawn, depending on the parents' genetic makeup. The white markings (like the chest cross and front paw) may also be passed down. The low inbreeding coefficient of 3.6% suggests good genetic diversity, which can help maintain healthy and strong offspring.