Natural Light Makes Us More Productive

Most office lighting is too dim in the daytime and too bright at night. 3 Properly tuned natural light taps into our bodies' natural rhythms, helping us do our best work.

Natural Light Makes Us Happier

Our bodies have evolved to respond to natural light. Dynamic light that matches the shifting color temperature of the sun throughout the day has a positive effect on sleep and overall mood.

Natural Light Builds Community

Buzzfeed's flexible, collaborative workplace design with Ketra lighting helped drive a 10% increase in retention, an impressive result for the highly competitive tech industry.

The Most Accurate Natural Light in the World.

Ketra light dynamically shifts, matching the sun's changing color temperature throughout the day with high quality, tunable white light, pastels and saturated colors.


We partner with the Mayo Clinic and Delos to use the latest research from the WELL Living Lab in our offerings.

  • Well Living Lab
  • Mayo Clinic

Complete system of lighting, controls and software offers end-to-end customization for your space. Ketra can also be retrofitted to existing systems.


Brands We’ve Illuminated