I just looked it up, methyl orange looks like the answer.
"Chemists use methyl orange as an indicator in the titration of weak bases with strong acids. It changes from red (at pH 3.1) to orange-yellow (at pH 4.4)"
General Chemistry Online: FAQ: Acids and bases: What is methyl orange? How is it made?
"For strong acids and weak bases methyl orange is the indicator of choice."
IB Chemistry higher level notes: Indicators