Gov. Andrew M. Cuomo on Tuesday unveiled the official New York State Sept. 11 Memorial Flag, which was raised at the State Capitol and will be flown at the entrance to the memorial at the World Trade Center site.

The flag has a deep blue background, and a white silhouette of the twin towers circumscribed by a pentagon. Surrounding the pentagon is a border of 40 yellow stars, representing the people who died when Flight 93 crashed in Pennsylvania. Beneath it all is a simple declaration printed in white type: “We Remember.”

“The flag that is being unveiled today is beautiful, and it is powerful,” Mr. Cuomo said at a ceremony at the New York State Museum in Albany. “It has all the symbols to tell the full story.”

The flag was developed by the governor’s office and the National September 11 Memorial and Museum, and neither party credited anyone in particular with coming up with its design.

“We consulted with many different people,” said Richard Bamberger, a spokesman for Mr. Cuomo. “We had books and books of different designs until we finally came to one that folks from all realms agreed upon and liked, and we find it very powerful.”

Replicas of the flag will be sold by the memorial and museum, with the proceeds going to support the memorial’s operations and educational programs about the terrorist attacks. Pre-orders are being accepted online.