The color of a cat's hair is determined by its own genes, and is also affected by the recessive genes of its ancestors, so it is impossible to accurately judge. But generally speaking, blue cats and white cats give birth to mostly white, blue and blue-white cats. However, we do not rule out the possibility of genetic mutation or inheritance from ancestors. There is a probability of producing other colors. This is mainly because It depends on which side's genes have the upper hand. But what is certain is that the eye color of white long-haired cats is blue, which may also be caused by the special attributes of genetic inheritance.