sure you'll have white, gray, black, dark brown, medium brown..make sure to repeat them all a bit, in small touches, different textures. a bit of white in your living (a throw? a mat in an art? part of a pattern in a rug or throw pillow? a vase?), a bit of brown in the kitchen (a wooden bowl,a cutting board?)..small stuff like that bring plants-there, you have green..:) which miraculously goes with everything, gives a feel of being both warm and cool, and doesn't prevent you from using any other color out there be it two accent colors or twenty other two-pick your favorites. Every color has hundreds of shades. I'd pick warm colors in cooler shades..or vise versa..since your existing colors are cooler, you want to bring some warmth in but not to steer too much into very warm territory. you also have sharper, cleaner colors..doesn't mean all your colors should be like that, one can be pretty free with small accents, but keep most of them same amount of "mutedness".. and if you like contrast I'd go for shades a bit vivid..not too pale say if it's yellow-rather daffodil than amber if it's red-rather geranium than red brick if it's blue..here, I'd consider depth of color too..something deeper. teal, cobalt? not too light a blue.. in short..repeat what you've got..bring textures..metallics if you like them ? wicker? something knitted? and then start introducing colors you love. chances are you already love the shades that'll go with your place..you picked clearer colors-means you love clearer colors..I, for example, always pick smth muddier, so chances are I'd continue to do so..:) and then if down the road I want to steer away just a bit, in a little something like art or vase-not a problem...once I know my general direction, I can start breaking my own rules here and there...:)

This is what the living room looks like

I can see where you are going. You want the bold pop of colour to enhance the browns. What has happened is you have gone a bit too DARK on the carpet and NOT DARK ENOUGH on the pillows. Believe it or not, I would switch out the depth of colour between the rug and the pillows. In your situation, a bound carpet is PERFECT for you. It allows you the size you need without having to deal with 'regular' sized area rugs. You can always look at a neutral colour carpet (boring) that has a WIDE binding in a FANTASTIC colour. You can have your cake and eat it too. The other thing that is 'missing' from your situation is a 3rd colour. Right now you have a monochromatic theme (which rates as ONE colour) with strong blue. In the design work that means you have only used 2 of the 3 colours in the 'three colour' rule. Here's how the 3 colour rule works: Main Colour: 60% Secondary colour: 30% Contrasting colour: !0% Right now I'm seeing 70% of the brown/white/black theme and then 30% of the blue. As pretty as it is...it is missing that last little bit of interest = 3rd colour. I would love to see a lemon/lime colour in here. Maybe a picture frame or a few vases placed around the room. You don't need much...but you need something.

My suggestion is to find a gray which works wth your present color scheme. So hard to suggest using a monitor, but here it goes. B.M. Thundercloud Gray for walls; adding new fabrics which give a nod to brown, but that’s all, just a nod; choosing large wall art; rethinking the t v wall area. etsy.com greatbigcanvas.com Your rug is the wrong size for the space, but that’s for another post.