I think a grey/green or grey/blue would look great with the cabinetry and floor.

Hi... in the 3rd picture the shell at the bottom next to the carpet is a wonderful taupe/grey. I would paint the walls that color and leave the molding around the windows white. It will make the bathroom much more dramatic.

Love it!!! Thank you I agree completely! My only concern is what color I would need to do the bed room so that they flo and coordinate nicely.

First picture is from the door way.

Second picture is standing in front of the curtain.

Third picture is the bed spread pattern and curtain color close up.

Fourth picture is my inspiration

Apparently my pictures don't like to post correctly.

First, I would center the bed on the wall so you can have night stands on either side of the bed. Looks like you have a grey a grey/taupe curtain, which helps tie it all together. Your inspiration is fabulous. I would look for 2 night stands that are dark colored, like the inspiration. To tie in the grey/taupe even more… get two matching lamps that are silvery with the same shade as in the pic. If you are doing the ottoman’s at the foot of the bed, do them in a grey/taupe to tie it in more. You are getting close to your inspiration! Have fun!

As far as the measurement of the wall goes, the bed is center. It looks off, which is why I'm putting up the second curtain to give it a balanced feel. I can't decide on the color of the walls. I can't do the cool lighting for a while. I don't want the room to look smaller than it is. I'm also going for a calming kind of feel that flows with the beach theme of the bathroom.

You might consider a slightly lighter shade of taupe/grey than the bathroom color i recommended..same tone, just slightly lighter.

It seems there is a mauve undertone to the taupe, is this correct?

I don't understand the question. If you're referring to the color currently on the walls, it's what the builder put up. It's like an ivory egg shell.
I tried to take a better pic of the curtains. They are actually green color called Argentina.

Is there a mauve undertone to the drapes and the shell in the shower curtain?

Yes to the shower curtain. No to the drapes in the bed room