A blue car title simply means the color of the paper that the title is printed on. What it represents depends on where you live. In the majority of states, a Blue Title is a salvage vehicle title. It means the car has been in a major accident, fire or flood. The vehicle is un-drivable and cannot be licensed. The color of the title varies by state, so check with your local DMV to make sure that a blue title is indeed a salvage vehicle in your state. In most cases, a green title represents a normal car, and a orange title is given to a rebuilt vehicle.
For more info, read Salvage Title Used Cars and Insurance: What To Know