What heels to wear with this dress?

I splurged on a dress for my graduation (getting my doctorate) and now I cannot figure out what heels to wear with it 😭 The dress is more greyish in person.

I linked the dress here: dress

I cannot walk in stilettos and want to be comfortable because my ceremony is going to be long. I’m trying to find something elegant but still practical enough to survive standing/walking all day.

Would nude, ivory, or black heels look best with this color/style? Also, should I do slingbacks, block heels, kitten heels, etc.?

I attached a few options I’ve been considering, but I don’t LOVE any of them and can’t seem to find the right pair. Please share links/recommendations if you have any ideas!