This kind of colour savvy would hypnotize me. The shirt looks like Soft Season coral (gorgeous as a nude lipstick on a woman), the jacket Soft Summer mauve-brown. The tie has more orange, might be Soft Autumn, and it settles in to the composition. The pocket square is more Autumn. The flower, maybe his daughter made that at school, is too yellow for the outfit and stands out, but hey, my kid made it. This is like doing an analogous colour scheme using the Season wheel instead of the colours.