If you want to use this theme, first you need to use muted colors for your color scheme. This is one of the signatures of the theme since in Scandinavia their winter itself is longer and darker. Thus, they love to use colors such as tan, grey, and white so the space will appear brighter and more uniform.
Another thing is you need to make sure getting as much as natural lighting as you could possibly get. That is why, try to use as much window or glass wall as you can in your bar. You do not need to apply any window treatment since it will block the natural light to came and illuminate the space.
When it comes to furniture for Scandinavian bar interior design, you can try to use modern furniture with suitable color scheme for the bar. Try to find furniture with sleek design with as little curved as possible, and gentle line. Usually they would come in wooden material since the tan wood color is suitable for this theme.
Speaking of wooden material, you might want to use this material as the accent for the interior design. You can use it directly on the bar counter, flooring, and even apply some accent on the wall and slat.
For decoration, you might want to keep them as minimum as possible since you do not want the decoration to clutter the space. Try to use greenery as decoration since it will make the space appear more inviting and warmer. Here are some Scandinavian bar interior designs that you can use.
image source : pinterest.com