Hélio Oiticica (Portuguese: [ˈεlju ɔjtʃiˈsikɐ]; July 26, 1937 – March 22, 1980) was a Brazilian visual artist, sculptor, painter, performance artist, and theorist, best known for his participation in the Neo-Concrete Movement, for his innovative use of color, and for what he later termed "environmental art", which included Parangolés and Penetrables, like the famous Tropicália. Oiticica was also a filmmaker and writer.