Françoise Hardy, an introspective pop singer who became a hero to French youth in the 1960s with her moody ballads, died on Tuesday. She was 80.

Her death, from cancer, was announced by her son, Thomas Dutronc, in a post on Instagram, saying simply, “Mom is gone.”

With songs like her breakthrough 1962 hit, “Tous les garçons et les filles” (“All the Boys and Girls”), and, later, “Dans le monde entier” (“All Over the World”); her longilineal look, prized by star fashion designers; and her understated personality, she incarnated a 1960s cool still treasured by the French.

“How can we stay goodbye to her?” President Emmanuel Macron of France said in a statement on Wednesday, a play on the title of Ms. Hardy’s 1968 hit “Comment te dire adieu” (“How Can I Say Goodbye to You?”).

She was the only French singer on Rolling Stone’s 2023 list of the 200 best singers of all time.

A complete obituary will follow.