A blue & tan dog is a dilution of the black & tan, whether solid or patterned they will not have any black hair on their body. They are a smoky grey color with tan points, grey eyes, nose and nails..

Two Blues bred together can have both Isabella/Tan and Blue/Tan offspring because of the Black/Tan behind the Chocolate/Tan dogs.

It is not recommend doing a lot of dilute to dilute breeding as I believe this can cause a weaken immunity system after a while. The results will be the off-springs will be more susceptible to skin and coat defects.