I just painted my home and it has dried for a week but every time I rub my fingernail over the paint it makes a chalky line. Why is that and what can I do about it?

We have Andersen windows Terratone color. The Terratone color is on the interior and exterior. The interior wood trim currently is all natural. We are considering painting the trim. What color could we paint the trim that would look OK with the Terratone window color?