I build my own LED light systems. I use to own a company where I built custom LED lighting systems for SW, FW, terrariums and I even had a customer who grew African Violets and I built custom led light strips for his AV's.
With that said my SW reef led lights typically have 4 channels. One for my UV LEDs, one for my Blue and Royal Blue LEDs, one for my White LEDs and one for my red and green LEDs.
My ratios are 2 to 1 blue to white, 3 to 1 Blue to UV and just a few reds and greens, no rhyme or reason on the numbers. I use 5W LEDs. So on a typical 24" fixture, I have 20 blues/royals blue total (6 blues/14 royal blues) 10 whites, 6 UV's and 3 reds/3greens. I also use 80 degree lenses.
I keep my UV's at 100%, my blues at 60%, whites at 25% and red/greens at 20%.
I run a sunrise/sunset controller. Sunrise starts at 9:30am with UV's and blues. Whites/reds/greens at 10am with all LEDs hitting their percentage settings at noon. At 8pm all LEDs start their sunset cycle with whites/reds/greens off at 9:30pm and UV's/blues at 10pm.