@FeynmanLogomaker(View Post) No, there's no formula or way to convert a deco color to a wavelength. Photon wavelengths have an extremely limited color range.
No, I made a mod of the deco editor once to see which colors worked, and only high saturation colors were really possible, also almost the entire deco square was greyed out as an invalid photon color. Finding the closest color would be hard and it probably wouldn't be very close ... photons are supposed to be their own color scheme anyway, not RGB
@tmo97(View Post) you would have to run it backwards, but it's not a reversable algorithm :P