There's no specific wavelength of light that looks pink. That's because, according to this super-short explanation from Minute Physics, there's actually no such thing as pink light.

They also had to add a yellow filter to the camera to soak up background blue wavelengths of light that were coming out of the UV flashlight, to make the fluorescent color more visible.

Strange, pink light found shining over Central Texas city By Ariana Garcia , Assistant News Editor Sep 16, 2024 Patrick Trice spotted a strange pink light in the night sky near Temple, Texas on ...