My ratios are on a percentage basis and I use much more than just red and blue, and more than 1 wavelength in each of those as well. My current ratios are 7% 62% 31% and 6% 56% 38%. However those numbers don't reflect diodes directly as I use cool and warm whites that also enhance some of those wavelengths as well. I guess the best way to answer your question is roughly 3:2 with 730nm as well.
Hi hb, can you elaborate a little more on this and detail which diodes you use as in red 630 nm blue nm etc?