Carlos Cruz-Diez was one of the leading figures in kinetic art. His aesthetic approach makes him one of the last color theorists. He built his work on color as an autonomous reality, devoid of anecdotes, evolving in real time and space without the aid of form or even a support.

Couleur à l'Espace (1965) is one of the experiments Cruz-Diez has been carrying out on irradiated color since 1959. The work is intended to make more apparent and visible the vital experience of color as it forms and disintegrates in space. It arises from the separation of one of the color lines from the background surface, in the form of a stem or section, from the module of the chromatic event.