Whether a floor plan is square, rectangular, or even oval influences how one perceives that space. The right lighting ideally accentuates the room's assets or works to contrast features that negatively alter the feel of the space. For instance, high ceilings can be made to look more dramatic and narrow by wall washers. Tube-like spaces can be made to look wider by an exciting lighting scheme. By using low-beam luminaires with reflectors, light is "pushed" into the lower half-space, leaving the upper half-space darker because it receives mainly indirect light reflected from the floor. Thus, the height of the room is perceived as reduced and the light area appears wider.
The height of a room also influences the mood or vibe one is getting upon entering the space. Whether it is more of a cozy, secure feeling or a sense of imposing spaciousness. In addition to appropriate decoration, the right lighting can support or counteract this. Not only the position of the luminaires may influence this atmosphere, but also the light color, or temperature, ranging mostly from warm 2000 to rather cold 6500 Kelvin. Furthermore, the nature of the ceilings plays a role. Concrete ceilings can appear oppressive but can also complete a minimalist industrial look.
Materials, colors & reflectance
The texture of surfaces and their colorfulness can equally create a certain mood in rooms. Natural earth tones can be calming, but also boring. A white wall can visually stretch the room, or appear bare & cool. The perception of this texture is significantly influenced by light. Especially the color fastness can even be measured and is expressed in a very high CRI value. A CRI > 90 is recommended, for example, if one really wants to tell the difference between a dark blue and black blouse in a closet, or if a hairdresser wants to find the perfect shade for a customer.
In addition to the generic characteristics of a room, there can also be architectural features. Columns, for example, or beams and vaulted ceilings.