When designing your wardrobe whether it is a walk-in or a typical built-in wardrobe, consider what lighting is required. A good lighting design will help you distinguish black socks from brown socks and allows you to find long lost items in the back corners of your wardrobe. In general the best lighting solution depends on how you use the space and the size of your wardrobe.
Consider fitting wardrobe lights that switch on and off automatically. Install an overhead motion-sensor light that screws into an ordinary socket, or utilise existing wiring for a spring-loaded automatic light switch in the wardrobe door jamb
Natural light from a wardrobe window is a plus. However, direct sunlight can cause fading of dark fabrics. Windows also take up prime storage space on the wall. Consider skylights with UV protection and clerestory windows nestled under eaves that offer natural light and ventilation.
If using artificial light, remember that the light source should be between you and the contents of the wardrobe. If it is behind you it will cast a shadow on what you are trying to see.
LED lights are an efficient solution for spotlighting your accessories. Used with glass shelves, these fixtures can light up an entire cabinet of items you want to display.