I mean additional cushions

A couple of additional cushions would bring extra comfort and colour to the sofa, perhaps matching your curtains or rugs? But it’s entirely your choice. I see some sofas dressed with so many cushions you can’t actually sit on it!

Would you recommend I have the cushions, rug and curtains matching?

You could add a couple of cushions in a colour or pattern to add interest and colour. It depends on what else is in the room and wall colour (cream?). Neutrals would be a good way to go. Co-ordinating the colours of the curtains, rug and cushions is good, not too matchy matchy. Something like this maybe?

Thank you Sonia this was the look I was trying to achieve these pictures look beautiful

The wall colour is deluxe almond white

These are the colours that go with the paint on the wall

These is the dinning room the fridge will be moved so will all the other clutter but the table has black legs so will black go with this neutral look?

They look lovely colours so should go very well with your Almond White walls.

Black goes lovely with neutrals, it gives it a lift. You could add a black framed mirror or artwork to tie in, and maybe cushions with a bit of black in them if you wish. They will sit well with your neutrals.

This is a picture of the space at the moment

Looking at the overall pic I think your room would really benefit from a large soft rug and a coffee or side table or two as well as the cushions that you queried. Loaf has lovely linen and velvet ones and the colour co-ordination is almost done for you as they only do sludgy colours. I would avoid pattern. Consider some small long rectangle ones for back support when sitting on the sofa. A mix of shapes is good.