One of the best things about closed rooms, such as your bedroom, is that you can decorate them any way you like without ever worrying about how it works with the rest of the rooms in your home. Just close your door and forget about it.
Most people prefer open floor plans because they offer more room to move around and create the effect of larger living spaces. In this case, you need to come up with a design plan that is pleasing to the eye but also functionally separates each space.
The key to making sure your rooms remain divided but flow well together is to maintain a similar color palette. That doesn’t mean that your walls have to be the same color throughout your open space.
You can use different shades of the same color. Many interior designers will go with the 50/150 rule, which means one batch is 50% lighter than the base color and another batch is 150% darker than the base color.
You can also use completely different colors on the walls of adjacent rooms. This especially works if the second room is painted with a heavily used accent color from the first room. For example, if your living room butts up to your kitchen and your living room is primarily neutral colors with light brown walls and darker brown and evergreen accents, then you can paint your kitchen walls a natural shade of green.
Accent colors can come from your wall art, decorative pillows, throws, and other home decor items. No matter how you decide to paint your walls, try to incorporate some of the same accent colors in to each room, but feel free to add one or two additional colors to fully separate them.
Using different colors on the walls is a great way to divide the rooms without closing off any space. Additionally, you can divide the rooms visually by using your furniture, a large area rug, or different types of flooring to section off an area without adding any walls.
When designing in an open floor plan, be sure that your colors and styles are harmonious together but that each living space remains its own defined space.