I like what you chose, thing is you will or someone else will paint the room down the road again so something neutral is a great plan.

I like the carpet sample on your floor, but, I dont like it with your wall color. Its a bit too brown. Take a white card and paint your wall color on it, two coats of paint, and take it with you to the carpet store, to compare against carpets, and then take the ones you might work, home and put them by your walls.

So glad you're saying goodbye to the purple! Fortunately, you can bring carpet samples home and see them at different times of day as the light changes.

If you look at coordinating colors for Accessible Beige, then you get colors that work good with your existing ones.

Why that color ?IMO so boring and not as neutral as you might imagine. What is your bedding IMO that is what you use to decide wall color .

Accessible Beige is a nice neutral backdrop for walls which allows you to change up your bedding color. For carpet consider looking at both beige and grey tones.

So in a bedroom, the bed is often a focal point. As such, the colors should attract attention from the rest of the room. So what colors are less attractive than the grey you seem to have chosen for your bedding. Is that pillow white I hope? Looks yellow on my screen.

Do you have another focal point like a fireplace or a huge window? Is that why you chose grey bedding? To focus on something else in the room?

Smart answer apple pie, carpet is much more expensive but choose a neutral that goes with all colours. Paint samples are a must to get the undertone correct.

Paint is the last step in a reno because it needs to be chosen in relation the fabrics and textiles. You're working backwards. There are thousands of paint colors and they can even be custom blended to work with your rug, bedding, upholstery, drapes. Fabrics don't offer that option and are "set in stone" once selected. That's why you choose them first and make the paint work with them, not vise-versa.