I would not suggest lavender or purple with browns. It looks great with white, gray, black or even some greens. I would suggest adding oranges or reds to brighten up the room:

that's a lovely idea- the rooms do look cheerful- but i've read that orange can sometimes elevate the blood pressure- i've not really tried or experienced the effect of colors on moods- but m little skeptical because husband is quite stressed out most of the time so was worried if reds n blues would increase his blood pressure in anyway. thats why i had avoided those colors. green i'm already using in the bedroom- pink-i'm not a big fan of. so was thinking maybe purple/blue/lavender- would those be calming and cozy?

i've not really color coordinated any of my rooms so far- this would be my first try and so i wanted it to turn out perfect.

oh yeah and i forgot to add that mine is an open kitchen close to the living room and the kitchen is already having orange cabinets- so again orange in living room would look monotonous i felt.

If you want calming colors, I would stick with beige and soft blues. It would mimic the beach in color and still have interest. Lavender and purples just don't work that well with brown.

You can add yellow, it is good for the nervous system. I would not add bright yellow though.

Light blue does look really pleasant n mine is a dark brown couch like in the second photo- light blue cushions on that do look cheerful- so I'd consider light blue then n yellow was in my mind too- so perhaps a mix of yellow n light blue or teal I'd try then.. Thank you for the great idea