Alejandro Otero (El Manteco, Bolívar, March 7, 1921 — Caracas, August 13, 1990) [1] was a Venezuelan painter of Geometric abstraction, a sculptor, a writer and a cultural promoter.

These latter works, dynamic collages that featured a tight weave of horizontal and vertical bands of multihued paper, show the artist experimenting with the spatial and optical effects of line and color.

As part of a large group of Venezuelan and foreign artists (including Hans Arp, Alexander Calder, Fernand Léger, Victor Vasarely, Mateo Manaure, Francisco Narváez, and Jesús Rafael Soto) contributing to the project, Otero realized a series of large-scale public works, including murals, stained glass windows, and Policromías (Polychromies), facades in glass mosaic.

Painted with Duco, a shiny industrial lacquer, applied with spray guns or rollers on wood or Plexiglas, the Colorhythms are large-scale immersive compositional modules executed on rectangular supports.

With the Coloryhthms, Otero proposed an idea of particular importance: the notion of the plane as a spatial field of forces in constant expansion, functioning simultaneously as immersive painting, volume, and architecture.