Definitely blue to match the quilt on the bed......nice to carry that right in to the next room. LOVE that bench at the foot of the bed!

I created an app to help people with color choices called Color911. You can create your own color palettes but I think what would help you is to find a color theme that works with both your bedroom and bathroom and use that to decorate both rooms. You can use the colors for anything from wall color to linens to towels, whatever you need. There are many color themes in the Color911 app, if this one doesn't work there are many others to chose from. I took a screen shot of a color theme to offer to you, I hope it inspires you :)