What is appropriate?

A lot can depend upon the religious beliefs of the family of the deceased. If the family is the typical Anglo-Saxon protestant or Catholic, then a dark color is the right choice. Other cultures and religions view death differently. Some non-religious people choose to celebrate life instead of death, making bright cheerful colors more appropriate. Learn a bit about the family’s culture and religion and choose accordingly to be respectful

Unless the funeral notice states “wear bright colors” or similar, dark business type clothing is most appropriate. Shorts, flip flops, tank tops etc., no. Some people feel black is more appropriate for family and very close friends, but that’s my quirk . Neat, pressed slacks or skirt, plain top or shirt, possibly a jacket or neat cardigan or sweater, nice shoes. You’re not dressing for a party