Navy.
Beautiful kitchen!

Do you have gray in your counter tops? They might work. Though navy would be better with kids and their messes! Are you doing brass hardware on your cabinets?

Yes the hardware is more of a champagne gold tone. Yes the Calcutta has light grey running through it.

Not sure...what is that? Stain resistant?

They look almost velvety? If so, the navy will show marks and scuffs easily, but hide stains better. They gray will show more stains but not so many marks and scuffs, so it's a tradeoff either way. I would definitely apply a stain guard regardless.

Good points-thanks. Maybe I need an alternative, not sure this will work after all...leather? I don’t really love leather on this kitchen but maybe that’s the way to go...

Leather would be nice! You can even go for a faux leather in blue or gray so that you can get a look similar to the original one you wanted. Definitely an easier material to keep clean with kids!

Doing leather/faux leather chairs and barstools with my little kids was the best decision. Wipes right up! Can also do an all wood stool, which would look great with the white and navy.

Ok this is the same style of chair but in a leather, it’s a deeper greige tone. Think this works?

I vote leather, and I think that one you just shared would look great!

I like the gray leather ones posted in the comments. What color is your island??

Navys are hard to match and depending on the natural light they could fade. I like the leather, easy to clean.

Thanks so much everyone, likely the leather will be the one. Don't need the stress of watching the kid touch the velvet chairs with greasy fingers!

A bit of brass to pick up the lantern finish could be nice. And a stool that rotates makes things easier in tight quarters.

Love those! But it’s our primary seating area other than our dining table on the other side of the wall, and so I need them a little more comfy with a back rest at least. I do like the second one though, thanks for your ideas :)

With kids, I probably would not do velvet. I'd stick to leather, acrylic or Krypton if you want fabric. Thoughts on these:

https://www.allmodern.com/furniture/pdp/adrianne-25-bar-stool-a000774590.html?piid=1061681545

I adore these from Ballard Designs and think they would look great with your pendants.

No swivel with kids. They love to turn and fall off. Stick with the leather.