What accent colors go good with gray?

Any bright color or colors that you like. Gray and black go with anything.

Turquoise - Burnt Orange - Spring Green - Flamingo Pink -

The beauty of gray is that anything goes with it, pick your favorite color!

https://www.homedit.com/colors-to-pair-with-gray/

If you use a true gray, rather than one in the blue family or the beige or green family, the sky is the limit. And it depends on whether your house will be more traditional, farmhouse or modern. White for trim really makes it pop, and I have seen a beautiful teal as an accent wall. Oil rubbed bronze lighting fixtures and door hardware also make a real statement.

White, to perk up and contrast with all that grey and black.

Medium pinkish purple, gold (great with darker shades of gray) cream- for a neutral look

I used a bright red

My personal favorites are turquoise, aqua, yellow. Hate beige and gray combo.

Red! Or a similar "warm" color for a surprise flash of color (coral, auburn, or peach)

Purple, it's my favorite color.....or plum.