We like deep, saturated colours which don't appeal to everyone/might not be your thing @cleo333.
At our last house we painted the main living room F&B Olive (an archive colour, but still supplied). Despite a huge wall of windows, we didn't have curtains as it was a rural property and not overlooked/visible to passers-by.
When we bought our current cottage last Autumn we had a good idea what colour we wanted the dual aspect living room to be (Edward Bulmer Pompadour - an earthy red), so it was the first space we tackled after we'd done some building work (the cottage is a renovation project).
We are currently in the process of swapping the kitchen and living room and will keep the new kitchen walls Pompadour, but the new living room (former kitchen 😉) is going to be Edward Bulmer Nicaragua (pink). I've already bought fabric for the curtains - a deep yellow ochre with a floral pattern in colours which pick up the pink plus purple, green, pale blue, all of which are in our rug/cushions etc.
In both spaces we are colour-drenching - using the same colour for walls and joinery.
Before finalising the colours/fabric, we obtained samples and with the paint, I painted large rectangles of lining paper which I taped to each of the walls to see how the colour looked throughout the day/night.
We saved £££ on the curtain fabric by shopping for large remnants on ebay.