De Typografie van Gérard Ifert poster

“Long before Playstation came along, Pieter Brattinga (1931–2004) was creating exhibition posters like this one, whilst working at his father’s printing house Steendrukkerij de Jong & Co. He organized over 80 exhibitions designing some fantastic modernist posters. Many of these posters can be seen at the fantastic graphic design museum in the Netherlands. The company was the printers of choice for designers such as Willem Sandberg, Wim Crouwel, and Benno Wissing.” — konstruktive

Online reproductions of this poster depict very different colors. My hunch is that the original is closer to the CMYK colors (above), not the primary colors (below).