A comparison of the spectrum measured from a Polachrome sample with the published spectrum for Polavision shows a similar basic curve progression but all the absorption maxima differ, particularly for the green screen dye.
Right: Figure 13 from Land, Edwin H. (1997): An Introduction to Polavision. In: Photographic Science and Engineering, 21,5, Sept., Oct., pp. 228–236, on p. 236.
Left: Giorgio Trumpy, ERC Advanced Grant FilmColors.