A New Yorker called 911 when she thought she saw a person in the iconic red robes from “The Handmaid’s Tale” on the ledge of a Manhattan building Tuesday — but it turned out to be just be a crimson umbrella on a rooftop.

“This morning I called 911 because I thought a woman dressed as a handmaid was about to jump off a building,” Casey McCormick posted on her Instagram story, and later on Twitter.

“The police were in constant contact with me as they figured out where to go and how to find the woman,” McCormick added.

The 30-year-old Brooklyn resident told The Post it was “startling” to see what she thought was a person at the top of a building from her office desk.

“There’s just so much going on [politically] it wouldn’t surprise me if someone was taking a stand and it became very scary,” said McCormick, citing recent anti-abortion legislation.

McCormick, who works at a media and publishing company, consulted with her coworkers and decided to call the NYPD.

About 15-minutes later she received a photo from the officer she was in contact with, showing a cop holding a large, red patio umbrella with a white top.

“It’s an umbrella. All safe,” the text read.

“I literally melted into my chair,” McCormick said. “I was very happy it wasn’t a real person and that everyone was safe [but] I felt so dumb.”

Still, she added, “Its better to be safe than sorry. [The NYPD] took it very seriously and we also did.”

McCormick’s tweets about the incident quickly racked up 52,000 favorites and had been shared over 8,000 times by Tuesday evening.

Even the NYPD joined in on the joke, sending a message to McCormick that read “Blessed be the umbrella,” in reference to a phrase on the popular Hulu series.

The Netflix Twitter account also chimed in with another reference to the dystopian show, commenting: “Ofumbrella.”

An NYPD spokeswoman confirmed they received a call relating to the incident at around 11 a.m. near West 27th Street and Park Avenue South — and that officers from the 13th precinct who responded “were able to access the building and upon investigation the person turned out to be an umbrella.”

“Jokes aside, if you’re ever hesitant about calling 911 – don’t be!” the NYPD added on Twitter. “We take all calls seriously, and worse case we get to go home with a great story.”

McCormick added: “I think New Yorkers have to look out for each other and when you see something like that, you have to do something.”