Tamiya's Hull Red is a brown which is more correct for WWII IJN applications.
Modern USN Hull Red is more of a red-orange color than brown. My favorite hull red is American Tradition Red Primer available in the jumbo economy-sized rattlecan from the local Lowes.
In modeling-sized paints, White Ensign's Norfolk 65 hull red is good (it is enamel). In acrylics The MM Acryl II Marine line of paints is correct also. Some will recommend a 50/50 mix of Insignia Red and Flat Black
Many of the model railroad boxcar reds are good too. Mineral Red is good, as is red zinc-chromate