Koula Marangopoulou was born in Kyparissia in 1913.

She studied at the School of Fine Arts, Athens under Pavlos Mathiopoulos and later she attended for a year (1939) the art school of Pericles Byzantios. After the end of World War II, she furthered her studies for three years at the studio of Georgios Bouzianis.

Marangopoulou was greatly influenced by Bouzianis. Under the guidance of this great teacher, she created her expressionistic style that combined abstract elements. She was a lover of landscape painting which she expressed with a strong impressionistic mood, transformed by a personal expressionistic language. She thus created an artistic idiom that is both inspiring and rare. Other themes included portraiture, everyday life and still life.

The painter herself stated: 'The medium of watercolour is a medium of denial and decay because its creation originates from the soul of the painter who conceives in a moment the eternal'.

Marangopoulou held a large number of solo exhibitions in Greece and participated extensively in group exhibitions abroad such as the Cairo Museum of Modern Art (1955), the Alexandria Biennale (1959), the Musee d'Art Moderne in Paris (1962), 'Peinture Grecque Contemporaine' at the Palais des Beaux-Arts, Brussels (1964).

Her work is found in public and private collections, notably: The National Gallery of Greece, the Athens, Rhodes, Kalamata and Nafplion Municipal Galleries and the National Bank of Greece Cultural Foundation.