To be clear on its origin its from the fuchsia flower which was made into the fuchsine dye which has these properties. See for its relationship to the visual spectrum [1] noting that the visual spectrum is ~400-700nm. The plant absorbs only the middle of the visual spectrum not the ends. This is the kind of stuff neither RGB monitors nor CMYK prints can capture well.

Note this isnt the complete story either as your eye may percieve it very similarly to purple anyway due to the way we see light (through our rods and cones which clump the spectra again anyway and are subtlety different for everyone).

[1] https://www.researchgate.net/profile/Bo_Hu12/publication/231...