A numeric evaluation of the accuracy (in relation to "daylight" at 100) of various types of light sources. Example: HMI is about 90.

a measurement from 0 to 100 that indictes how accurately an artificial light source, as compared with an incandescent light, displays hues. The higher the index number, the more accurately the light is rendering colors. Incandescent lighting has a color rendering index above 95; standard high-pressure sodium lighting (such as orange-hued roadway li [..]

A rating method by which fluorescent, or any other light source, is evaluated according to its ability to impart color to colored objects, with natural outdoor light having a CRI of 100. Cool White ha [..]

A method for describing the effect of a light source on the color appearance of objects compared to a reference source of the same color temperature. Or a measurement of how accurately a lighting source defines objects. The best score is 100, the CRI of sunlight.

an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer colors generally appear.

A measure of a lamp's ability to render colors accurately. The scale ranges from 1 (low pressure sodium) to 100 (the sun). A CRI of 85 is considered to be very good.

Color rendering is the ability of a light source to produce color in objects. The CRI is expressed on a scale from 0-100, where 100 is the best in producing vibrant color in objects. Relatively speaki [..]

Indicates the light’s ability to render colors across the spectrum.

 

A quantitative measure of the ability of a light source to reproduce the colors of illuminated objects accurately when compared to a reference light source, such as an incandescent lamp.

CRI-indicates how true to color lighted objects appear. CRI measures light sources on a scale of 0 to 100. A higher number means more accurate color rendering. Sunlight is the benchmark for CRI at 100. Most residential applications use lamps with a CRI of at least 80.

a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natural light source. Read more.

A rating index commonly used to represent how well a light source renders the colors of objects that it illuminates. For a CRI value of 100, the maximum value, the colors of objects can be expected to be seen as they would appear under an incandescent or daylight spectrum of the same correlated color temperature (CCT). Sources with CRI values less [..]