What kitchen and dining room setup is the most efficient in terms of space?

If you're looking to make the most of a small- or medium-size dining room, then your best bet is a long, rectangular dining room table with as many side chairs as you can fit. Or, you can substitute a bench for those side chairs, since more guests can squeeze onto a bench in a pinch. Keeping some extra folding chairs on hand helps for those situations when you need a few more places to sit, and you can fit those chairs in a closet when you don't need them.

Can you use blue kitchen and dining room chairs outdoors?

This depends on the chair material, as certain materials are far more weather resistant than others. Kitchen and dining room chairs made of plastic tend to be the best choice for outdoor seating, as the material doesn't get damaged very easily. Metal is another durable material. If you have blue kitchen and dining room chairs made of wood, those are typically safest indoors. Of course, no matter what a chair is made of, you should try to keep it out of inclement weather conditions and bring it inside or under cover when you can.

What colors are a good fit with blue kitchen and dining room chairs?

You have no shortage of options here, as blue allows for a variety of beautiful color combinations. Most shades of blue are on the cool side, which means chairs in those shades complement other cool colors, such as greys, purples, and browns. With brighter colors, such as oranges and yellows, blue makes for an eye-catching contrast. If the rest of the room and its decor are predominantly white, blue kitchen and dining room chairs stand out nicely without being too loud.