Finding a signals complimentary sound / frequency
Yes and no. Only monochromatic colors consist of a single wavelength, and those do not really "wrap around" in the form you describe. Color addition and subtraction have more to do with the three types of cone cells in our eyes than with wavelengths. Since there is no audio analogue to these cone cells, the concept of complimentary colors doesn't exist in the same way.

However, if you consider notes instead of frequencies, in the sense that two frequencies that are one or more octaves apart constitute the same note, then you can say that two notes are complimentary if they are a tritone apart.