Vasarely is widely regarded as the father of Op-Art. Even though he achieved great fame he insisted on making his art accessible to everyone. His motto was "Art for all".
"Folkokta" belongs to his Vega-Series, which he began in 1969. He started out by creating a regular grid but, unlike most other works of this series, in this work he did not deform it, but created the illusion of three-dimensionality solely by his choice of colours.