Hey, you’re in US? Home Depot should have it. The one brand the community use a lot is rust-oleum. You can even find it in amazon.
Another spot on color is color code RAL7031. (European color code, doesnt matter what brand)
You basically need to find any paint shops, ones with automated color mixing machine and have them mix it with that color code.
i am from Jakarta, and one i use is Jotun (brand).
hope this helps