Since your room is large your color options with this room are quite broad

For your main color, we chose to use blue because it is calming, relaxing, and serene. It ris reminiscent of blue skies and deep blue oceans. This color works well in bedrooms, living rooms, and anywhere really. The deeper darker gray tone helps solidify and ground your space.

Use an eggshell finish paint which has a very light touch of shine (similar texture to an eggshell as implied by its name). This finish is very often used for walls and is more durable and easier to clean than matte finish