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A light's color affect how we perceive the color of an object lit. For example, a blue painting under a bluish light will heighten our feeling of its blueness, but a red painting under a blue light will make it very dull and grayish, because there are no "red color waves" made by the light. The main indicator of color is the CCT (correlated color temperature) measured in degrees Kelvin. Lights of America typically uses 2700K warm spectrum bulbs for indoors and 6500K for outdoors |
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Light sources also have another important index: The color rendering index (CRI) scaled 1 to 100. CRI is important in a home because it affects how furniture, decorations, and even people look. Incandescents are considered the best at 95 to 100. Newer Tri-Phosphor Fluorescent (this is all Lights of America uses 84 to 88 CRI) is rated above 80, while mercury vapor and old fluorescent are 62 or above. Using CRI with 84 or better gives very little color shift loss. |