Interior painting question?

I once had a house with the kitchen and living room attached. I used the same color, just a different sheen for each room. Another option would be to use the same color, but one shade darker in one of the rooms.

I agree with Ann. Same color different sheen or same color but different shade. It would blend transition of the two rooms.

Ann's suggestion is a good one and works well to differeniate the two rroms but in a subtle way. We did it in a "shotgun" house where living room attached to kitchen. We used a darker tone in the living room, lighter in the kitchen and it worked very well and made the rooms cohesive but not the same.

Here are suggestions from professionals

https://homeguides.sfgate.com/paint-rooms-different-colors-rooms-run-together-55516.html

https://www.bhg.com/decorating/color/basics/5-ways-to-connect-rooms-with-color/

https://www.hunker.com/13412929/how-to-paint-two-rooms-sharing-the-same-wall

https://www.truevalue.com/diy-projects/post/paint-and-stain/connect-rooms-using-paint-color

Know that choosing complementary colors is bold but can be jarring!

https://www.truevalue.com/diy-projects/post/paint-and-stain/connect-rooms-using-paint-color

Important, in-depth info on color theory etc.

https://www.hgtv.com/design/decorating/color/connecting-rooms-with-color

Whenever I am making design decisions re wall paint/colors I first pay attention to all "natural" breaks. For example, a natural break at a corner is the inside corner. Outside corners are not natural breaks as the material the wall is built of has 3-dimensional mass. Changing wall colors on outside edges instantly (even if subconsciously) feel "wrong".

My dining room and kitchen are basically one room and painted the same color. That unifies the area. I wanted it to look like one inviting area not sectioned off even by color. But that was just what I did.

I would make it all the same color.

To create a cohesive flow, I would paint both rooms the same color. If you simply do not want to do that, you could run a piece of trim where the two wall sections meet. Since it looks like the wall runs between upper and lower cabinets, I would put the trim inside the kitchen area and paint it the kitchen color. We did this when we had tile that needed to end in a strange place and it looked very deliberate and solved the issue easily.

I would definitely make it the same color, if you divide the wall will look choppy.

Keep in mind that it is more cost effective to paint the whole area the same color, rather than two colors.

This way, you will not be stuck having leftover paint that you may not need in 2 cans. If you stick with one color, you will be able to touch up scratches, etc. with the color you have leftover, rather than maybe needing to buy an additional small can of the one color that you don't have any leftover anymore.

Take the kitchen color to the back of the wood. Bringing the other color in would look odd as under what I assume from the photo is cabinet or shelving is still part of the room.

I would also suggest the two tones and then you can put a trim piece right where the 2 colors meet.

Which part of the kitchen or other room is the pice closers to which ever then paint it to closet room

The entire wall should be painted on color.