When choosing a large abstract painting for your living room or hallway, consider the color scheme of the space to ensure harmony or create a striking contrast. Think about the mood you want to evoke; vibrant colors can energize a room, while softer tones may promote tranquility. Additionally, consider the size and scale of the painting in relation to your walls and furniture, ensuring it complements the space without overwhelming it. Lastly, choose a piece that resonates with you personally, as art should reflect your taste and style.