If you look in the data sheet for your paper it will give you the safelight filter-type required, also then test it of course because distance, wattage and/or bounce from a ceiling are all going to be unique to your situation.
If you are trying to match an existing filter from one manufacturer with that of a currently produced range, then it will be best to compare transmission graphs and these are available in the links above for (at least) Ilford and Kodak products. Matching the verbal colour-description and fitness-for-purpose text would also be sufficient for normal materials I expect.
In any case, test your own lighting when you change anything . . .