Sleep glossary
colour temperature
Updated
Warm bedside light feels different from cooler daylight-like light.
Plain-English definition
Colour temperature describes whether light appears warm, neutral, or cool, usually measured in kelvin.
Warm bedside light feels different from cooler daylight-like light.
Why it matters
Wake-up lights and smart bulbs should be compared by brightness, warmth, dimming, and timing.
Buying relevance
Use this term as a practical buying clue, then check the current manufacturer wording, setup guidance, materials, and returns policy. It should not be treated as a medical claim or a guarantee of how a product will work for you.
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