Another complementary pair of colours

Back in the summer, when I was collecting reds and greens in the garden I said I'd have to wait till the crocuses were out for another complementary colour pair. But here are some nice little irises that were growing quietly in the greenhouse. Unfortunately the purples have not photographed with the true hues. Transfer the colour of the top pic to the one below it to see what the one with purple and yellow actually looks like. The top one is actually a real red-violet, not a trace of blue.