According to the Dodge press
According to the Dodge press kit, B5 Blue isn't available on the 2015 Challenger SXT or SXT Plus but a color called "Jazz Blue Pearl Coat" is. Since no other blue is available on the 2015 SXT, I believe that's the color shown here. In the photos I've seen, it does look like a pearl coat paint and is a beautiful color in my opinion that transforms the car.