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How light color affects melatonin production in workspaces
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Abstract
Polychromatic white light of <2000 K impaired color discrimination in a study with 17 students.
- Visual performance measures such as visual acuity and contrast sensitivity did not change with different lighting conditions.
- Melatonin suppression was negligible for color temperatures below 2000 K but increased with higher color temperatures.
- CCTs below 2000 K may not be suitable for workplace environments.
- Higher CCTs could shift circadian rhythms and aid adaptation to night work.
- An increase in luminance may enhance the effects of higher CCTs on melatonin suppression.
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