Rovers took a shock lead when England star Hart and central defender Kolo Toure had a miscommunication outside the penalty area.
The Blues recovered to equalise through Patrick Vieira but couldn’t find the winner.
“I got there and Kolo was about to head it, he heard me coming and left it. It was me getting in the way if I am honest. I hold my hands up. I am sorry for that,” reflected the Three Lions goalkeeper.
“I thought we did ok after the goal but Blackburn defended well. Paul Robinson did great. The save from Gareth Barry was special; all the rest of the saves he would expect to make but it is not just as easy as that.
Their goalkeeper has been the star man and Chris Samba has made a great last ditch clearance from Jo which shows we had more of the game
...Joe Hart
“It was a shame we couldn’t find the winner and we were all really disappointed. We are going to have difficult games this season where teams are going to come here and defend.
“Although we are disappointed with the result we must learn and keep moving forward. Like we did at Sunderland; we played some good football at times and just needed that break in front of goal.”
Hart had previously been beaten only once this Premier League and Europa League season and that a last minute penalty at the Stadium of Light.
“Defensively we feel as though we have made a decent start to the season. We have still in only one goal from open play and that was a pretty freaky one,” he concluded.
