The quality of lighting in a room plays a crucial role in shaping the perceived appearance of the space. Light is a determining factor in how colors are perceived, as it influences their intensity and accuracy. In low-lit rooms, colors can appear dull and less vivid, while bright lighting can bring out the vividness of colors.

Moreover, the lighting in a room can also alter the perception of its shape and size. For instance, painting a small room in a bright color and adding multiple light sources can make the room appear larger by reflecting light off the walls. The use of mirrors can also have a similar effect.

Therefore, it is essential to consider the quality of lighting when designing or decorating a room, as it can significantly impact the overall aesthetic and ambiance of the space.

Unlock the Secret to Perfect Lighting: Understanding the Technicalities of Light Quality

It is fascinating to realize that color only exists in conjunction with light. Light can be a complex subject, but a basic understanding of its technicalities can be valuable for anyone.

Light quality is a multi-faceted aspect that can be broken down into various components. In this discussion, we will focus on two of the most important factors: Color Temperature and Color Rendering Index (CRI).

Color Temperature

Color temperature is a scale that measures the hue of white light, ranging from warm white to cool white. The color temperature of a light source can greatly impact the atmosphere of a room. Warm white light is often used in cozy spaces like bedrooms and living rooms, creating a relaxing ambiance. On the other hand, cool white light is typically used in spaces where focus and alertness are required, such as workspaces, kitchens, and garages. If you are unsure about which color temperature is best for your needs, you can refer to the Color Temperature Scale for more information.

CRI (Color Rendering Index)

Color Rendering Index, or CRI, is a measure of how accurately a light source renders colors. CRI is rated on a scale of 0 to 100, with a higher number indicating more accurate color rendering. Incandescent and halogen light bulbs have a CRI of 100, as they provide a natural light source that closely mimics the light from the sun. However, due to recent regulations passed by the United States Department of Energy, most incandescent and halogen light bulbs will no longer be available after March 2003.

Lighting and Color: How to Create the Perfect Atmosphere in Your Home Rooms

The combination of color and lighting can evoke different emotions and moods, as well as highlight design elements in various rooms in your home. Here are some examples:


For a comfortable and calming atmosphere in a bedroom, it is recommended to use less intense lights such as warm white table lamps or LED strips under the bed. However, it is important to also have bright overhead lights available for when they are needed.


Accurate color rendering is crucial in a bathroom, especially when applying makeup. Daylight light bulbs are recommended to accurately display the true colors of your products.

Dining Rooms

Warm-toned lights can create a more inviting atmosphere in a dining room, encouraging conversation and creating a more enjoyable environment for dining.


Multiple tasks are performed in a kitchen, so using lighting that promotes alertness is essential. White-toned lights should be used to create a sense of cleanliness and provide clearer visibility for safe task completion.

What is the Psychological Effect of Light and Color on Emotions and Mood?

The psychological impact of light and color is significant and can greatly influence one's mood, emotions, and even behavior. Different colors and lighting conditions can evoke different responses and affect our physiological and psychological state. For example, warm, soft light can create a calming and relaxing atmosphere, while bright, cool light can stimulate and energize us. The use of color can also evoke emotions and psychological responses, with cool colors like blue and green being associated with calmness and serenity, while warm colors like red and yellow are often linked to excitement and energy.

Moreover, the intensity and brightness of light can also play a role in our psychological response. Bright, intense light can increase alertness and attention, while dimmer, softer light can help to create a more restful environment.

Light and color work together to create atmosphere and evoke feelings and emotions within a space.By understanding the psychological effects of different lighting and color choices, we can create a harmonious and balanced living space that supports our overall well-being.

The Internal Clock: Circadian Rhythm

Circadian rhythm, also known as our internal clock, has a significant impact on various biological processes, including the secretion of melatonin, cortisol activity, and overall alertness. Blue light has been found to suppress melatonin levels, keeping us awake and alert, while red light has the opposite effect, increasing melatonin secretion and preparing the body for sleep.

A disruption in the circadian rhythm can lead to sleep problems and, in turn, can result in changes in behavior and emotions, as the limbic system, which regulates emotions, is also influenced. To maintain healthy circadian rhythm and ensure better sleep, it's recommended to avoid exposure to blue light, especially in the evening and before bedtime, in order to allow melatonin levels to rise.


In conclusion, the relationship between lighting and color is an important one that should not be overlooked when it comes to creating the desired atmosphere in your home. By understanding the technicalities of light quality, such as color temperature and CRI, you can tailor your lighting choices to enhance and bring out the true colors in each room.

Whether you are aiming for a warm, relaxing environment in your bedroom or a bright and stimulating one in your kitchen, the right lighting can help you achieve your goal. By keeping the important relationship between lighting and color in mind, you can transform your living space into a reflection of your personal style and desired mood.