How to translate "I hope I didn't embarrass you"?
That phrase that you provided means, "I hope I didn't cause you to lose face." However, that is not a common saying. 

To say, "I hope I didn't embarrass you" in the context of having accidentally said something inappropriate about another person would be: 

希望沒有讓你難為情

Alternatively, you can say

希望沒有讓你覺得難為情