Designing With Circadian Rhythm and LED Lighting in Mind
The light changes throughout the day, and our bodies are designed to respond to those shifts. Morning light helps signal that it’s time to wake up and become alert, while the warmer tones of evening prepare the body to wind down. This daily pattern plays an important role in our circadian rhythm.
With advances in LED technology, homeowners have more control over the quality of artificial light inside their homes. Now, they can adjust color temperature and brightness, making it possible to create lighting that better complements the time of day, the activity taking place, and the atmosphere you want in a room.
What Is Your Circadian Rhythm?
Your circadian rhythm is the 24-hour cycle that helps your body know when it’s time to sleep and when it’s time to wake up.
While your brain naturally sets your circadian rhythm, environmental cues can influence it, with light playing an important role. When light enters your eye, cells send a message to your brain that it can stop producing melatonin, a hormone your body produces to signal that it’s time to sleep.
This is where the flexibility of modern LED lighting makes a difference.
Color Temperature vs. Lumens vs. CRI
When choosing LED lighting, three factors noticeably affect how the light looks and feels: color temperature, lumens, and CRI.
Color Temperature
Color temperature describes how warm or cool a light appears and is measured in Kelvin (K). Lower color temperatures produce warmer red and amber tones, while higher color temperatures produce cooler white and blue tones. For example, a 2000K light will look much warmer than a 4000K light.
Lumens
Lumens measure the amount of visible light produced by a light source. Simply put, the higher the lumens, the brighter the light. When you use a dimmer, you reduce the lumen output to make the light less bright.
Color Rendering
Color rendering refers to how accurately colors render under an artificial white light source compared with natural light. It is measured using the Color Rendering Index (CRI), a scale from 0 to 100. The higher the CRI, the more accurately colors appear. CRIs under 80 are generally considered poor, while those over 90 are considered great.
Standard LEDs and Modern LED Lighting
Standard LEDs maintain the same color temperature, even when dimmed. Warm dim and tunable white technologies allow the light to shift between cooler and warmer tones, giving you more control over how your home is lit from morning to night.
These changes complement your circadian rhythm.
What Is Warm Dim Lighting?
Warm dim LEDs become warmer in color as you lower the brightness. For example, as you dim the light, it can change from 3000K or 2700K down to 1800K. This creates a soft, warm glow similar to incandescent lighting or candlelight. Since no additional wiring is required, this technology is a great option for remodels and retrofits.
What Is Tunable White Lighting?
Tunable white LEDs let you adjust the color temperature without dimming the light. It goes from 4000K to 2000K, creating the warm glow of a sunset even at full brightness. With wired and wireless options, this technology is well-suited for existing homes and new construction projects.
Turn Bright Ideas Into Better Living
The right lighting can transform the look and feel of your home throughout the day. At Hercules Design Build, we look at the details that shape everyday living, from lighting and layout to materials and finishes. Whether you’re remodeling your current space or building a new home, our team can create a thoughtful, cohesive design around the way you live.
To start your next project, contact us today!
