The Houston Texans colors are deep steel blue and battle red, with white as a third color. Deep steel blue is a very dark navy used on the jerseys and helmet. Battle red is the accent color in the bull-head logo and stripes. The red, white and blue scheme draws on the Texas flag.
These are commonly used reference values; they can vary by source, material or screen. Brand names and colors belong to their owners; this page only lists color codes for information.