Used to introduce a contrasting viewpoint or to restate something from the opposite angle; 'conversely' or 'if anything'.
彼は慎重すぎる。逆に言えば、失敗を防げるとも言える。
He's overly cautious. Conversely, you could say that this prevents mistakes.
逆に言えば、リスクを取らなければ大きな成果も望めない。
Put another way, if you don't take risks you can't expect big results.
その説明は分かりやすい。逆に言えば、細かい例外は見落としやすいということだ。
That explanation is easy to understand. Conversely, it means minor exceptions can be overlooked.