I moved into a house like that, and I had to repaint. It was just too depressing. If you can’t do that, red would look good.

Beige and blue maybe

I love greens – try a mint or sage.

Teal or orange go well with browns or maybe a mix of both even possibly red

I would add brighter warm colours like reds, yellows, orange. Might look very 1970’s though.

Creams,orange,white and green would brighten the lounge up!

Brown can go with cream, pink , crimson , purple ,

Lots of colours! Say, an autumn theme of brown, orange, red and yellow and greens.

I know your chaise is brown, but I love this scheme…

I love adding red, mahogany goes great with other brown furniture.. You could also try a feature wall to brighten things up :).

duck egg blue is nice with brown or any autumn colour.

Hot pink!

Nice shades of red ,awaken the room ,earth tones go well together & never get too dirty looking .

get a light colour like baby blue, cream etc to brighten it up

Also; a colourful feature light fitting gives a room colour and glamour.