Since your office is spacious, incorporating dark and rich tones will enhance its masculine vibe while creating a cozy, inviting, and lounge-like atmosphere.

Using a dark green tone in a large office creates a grounded and sophisticated atmosphere with a masculine edge. It brings warmth and coziness to the space, making it feel more inviting despite its size. The deep, rich color adds a sense of timeless elegance and subtle drama, while also connecting the space to nature, promoting calm and focus. Perfect for an office that feels both refined and comfortable.

Use a matte finish paint because it will be helpful in camouflaging those surface imperfections such as bumps and cracks as it does not reflect light. Just be careful because matte finish is more difficult to clean. You may also need to touch up scratches or marks by adding more of the same paint in the future.