Have you considered continuing the agreeable gray throughout the space? Using the same color gives the space a feeling of harmony.

That is what the painter suggested also.

I agree with Jennifer. I would paint it agreeable gray.

Try Behr Sand Drift, but buy your paint at Sherwin-Williams. See it in person with a paint chip from Home Depot. Repeat, do not buy the Behr paint.

https://www.behr.com/pro/ColorDetailView/N310-1 

Hey there. There are many great colours that would work with Agreeable Gray. Here is a blog post with colour palettes to share the undertone, the best whites for your trim/ceilings as well as inspiring colour combinations. I hope this helps! Agreeable Gray Paint Review here

Claire is correct that there is no rule saying that you need to use just the one color and there are colors that work well with Agreeable Gray. The reason that I suggested using Agreeable Gray wasn't that there are not other choices, but because you have two spaces that are not currently speaking to one another. The only commonality between the two rooms is the cabinet color and countertop color. If you had the same flooring running throughout the space I may not feel as strongly about keeping the wall color the same, but you don't.

Using the same wall color and possibly using some of the Kindle Gray will make the two spaces feel like they belong in the same home. All too often I find that people have picked colors one room at a time and end up with something that feels disjointed.

I don't do color one room at a time - I always plan a whole home color palette and work from there. Usually I choose one neutral and might do a lighter and darker version of the neutral, and then add color to my neutral spaces and use those same colors as wall color in an adjoining bedroom or bathroom.

Here are a couple of homes that were designed with a whole home color palette in mind.

Whole Home Color Palette and Accent Color · More Info

Whole Home Color Palette and Accent Color · More Info

It is just that agreeable gray depending on light sometimes it is grey and sometimes it is creamy beige like. And I don’t know if it goes with my kitchen cabinets and backsplash tiles?
Do you think if I choose to paint the kitchen walls with SW accessible beige, it will clash with agreeable grey in the living room?

Agreeable gray is neutral color. I would go with it for entire house.

It looks like the cabinets/countertops in the dining room match the cabinets/countertops in the kitchen, so that you already know works well.

We can't see your backsplash in the photos, so can't judge, but Agreeable Gray is a greige that works well with most everything except for beiges with a pink undertone and taupe with pink or violet undertones, which is an unlikely color for your backsplash as it would clash with the cabinets and current kitchen wall color.

Both Agreeable Gray and Accessible Beige are Greige (Beige/Gray) one is more gray, one is more beige, but neither are true gray or true beige. The problem with having them next to one another is you risk that they are too close in color and can just look 'off' or like a mistake rather than a deliberate decision.

Again, for a feeling of harmony, especially with the two different floorings, I would not change wall color between the two rooms.

Afsaneh, Since we can't see the backsplash it's difficult to give suggestions. I would strongly suggest addressing the ceiling angles and lines as well. A bright white ceiling doesn't work with the fixed finishes in your kitchen, there are many ways to address your tray ceiling to help it look amazing.