How can I effectively illuminate a dark room with the right lighting?

To effectively illuminate a dark room, use a combination of ambient, task, and accent lighting. Start by installing overhead ambient lighting to evenly brighten the space. Then add task lighting, such as desk lamps or under-cabinet lights, for specific activities. Finally, incorporate accent lighting, like wall sconces or floor lamps, to create depth and visual interest. Adjust the brightness and color temperature of the lights to suit the room's purpose and ambiance.