My hair was recently dyed blonde using bleach I am wanting to go light brown I know I have to get a dye with a red tone to it but what colour will be best? Any suggestions??

Just be careful about the shade you select. It's very common for people to pick the shade they want (from the color swatch or box color), and then find out that it turned out too dark. Bleached hair tends to absorb more color than virgin hair. As a result it can turn out from one to two "levels" darker than expected.