Beautiful tie. I'm jealous
Re square, I would use anything in your drawer that picks up any of the colors in the flower print. A dark green, some color variation around the dot (pink/fuschia/red?).
Who cut that jacket? Looks fairly neapolitan but the angle may account for a lot of the perception.
The suit was made by a tailor residing in the Milano region. He makes regular trips to the Netherlands. I was introduced to him by T4. Quite a competent tailor that also does a nice shirt shoulder. This jacket as a small rolino. The overall appearance is quite relaxed, like some of the Neapolitan makers. Although arguably the overall look of e.g. Solito, Panico and Rubinacci is a bit more soft and 'round' [for lack of a better word, at least in my vocabulary].
Today business casual. Only working half a day and no client meetings.