Tips for decorating open plan kitchen, diner and living room

[Floridasunset]

When we move to our new house we will have an open plan kitchen, dining area and living room. It is an L shape so you won't be able to see the kitchen when you're in the living room. There will be a peninsula in the kitchen so we will have a definite feature of where kitchen ends and dining area starts.

Any tips on bringing it all together? I want the living area to still feel cozy even though it's open plan. Walls the same colour all the way through?

We have this, although we have a separate sitting room as well. Walls all the same colour - F&B Clunch, woodwork F&B Pointing. Floor is wood- oak, kitchen is wood with granite worktop. The hob splashback is glass with dark red behind and I have picked up the red in accessories eg cushions, tablecloth. Same fabric for blinds/ curtains (cream and black).
The kitchen was in when we moved and is in good condition so we’ve stuck with it.

Watching for tips as this will be our layout post building work (with separate but connected front sitting room too).

My working idea at the moment is to use the same colour but getting deeper from the back to the front of the house, so the kitchen diner areas at the back would be eg pale grey/blue, the middle sitting area would be mid grey/blue and the front room a dark grey/blue.

Having said that, I want grey blue kitchen units so I can already see a bit of a problem with my plan...

Thank you both. Both ways sounds like it will bring it all together nicely.
I would like they cabinets too so could incorporate that with accessories in the other areas

I walled off the living room, I was desperate for a carpet and fireplace and cosiness to which I could close the door. It somehow made both areas look bigger too and having the wall space helped with storage and where to put the sofa.
If you’ve ruled that out I would try to section the areas clearly, maybe have the back of the sofa as the dividing line. And a huge rug in the sitting room.

I think that was a v clever suggestion by a PP to paint the walls in deepening shades of the same basic colour - especially as with an L you will have a nice separation anyway. But the same paint colour looks very different on each wall anyway.

Think the trick is zoning and linking - so clear function areas (Kitchen and dining) - but linked with seamless background - so same flooring and similar colour on walls - but then differentiate with textures - rug under dining table - big rug and fabric sofas at lounge end - not leather. Accoustics are important - need soft furnishings to counter. Lighting also important - dimmable - and lamps

I'd go with varying tones of similar colours too. Think f and b elephants breath and skimming stone for example...