Family members who are exempt from the EU entry ban
Family members who are nationals of a non-EU country may be able travel to the Netherlands to visit you. But this depends on your situation and their situation. Check beforehand what type of test result they need to show before departing for the Netherlands and whether they need to self-quarantine for 10 days on arrival in the Netherlands.
People who have been fully vaccinated can be exempted from the EU entry ban. A negative test result is always required.