What color is aviation fuel used in the Cessna training airplanes?

Aviation fuel commonly used in Cessna training airplanes is typically colored blue. Specifically, 100LL (Low Lead) aviation gasoline, which is the type of fuel most often used in general aviation aircraft including many Cessna models, is dyed blue to help differentiate it from other types of fuel. This color coding is important for safety, as it allows pilots and ground crew to easily identify the correct type of fuel for their aircraft and avoid potentially dangerous mistakes, such as using jet fuel, which is not compatible with piston engine aircraft. The blue color serves as a visual cue that enhances operational safety on the ramp and during fueling operations.