Suspiria is noteworthy for several stylistic flourishes that have become Argento trademarks. The film was made with anamorphic lenses. The production design and cinematography emphasize vivid primary colors, particularly red, creating a deliberately unrealistic, nightmarish setting. This look was emphasized by the use of imbibition Technicolor prints. The imbibition process, used for The Wizard of Oz and Gone with the Wind, is much more vivid in its color rendition than emulsion-based release prints, therefore enhancing the nightmarish quality of the film.

The film was the final feature film to be processed in Technicolor before the processing plant was closed.