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<p><b>New page</b></p><div>[[file:ColorValue.svg|thumb|left]] [[file:Lightness_approximations.svg|thumb|left]] '''Lightness''' is a visual perception of the reflectance or brightness of a surface. It is one of the key attributes of [[color]] perception, along with [[hue]] and [[saturation]]. Lightness is often confused with [[brightness]], but they are distinct concepts in the field of [[color science]].<br />
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==Definition==<br />
Lightness refers to the perceived reflectance of a surface, which is how light or dark a color appears. It is a dimension of color that allows us to distinguish between different shades of the same hue. Lightness is typically measured on a scale from black (low lightness) to white (high lightness).<br />
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==Measurement==<br />
Lightness can be quantified using various color models, such as the [[CIELAB color space]] and the [[Munsell color system]]. In the CIELAB color space, lightness is represented by the 'L*' value, which ranges from 0 (black) to 100 (white). The Munsell color system uses a similar scale, with values ranging from 0 (black) to 10 (white).<br />
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==Factors Affecting Lightness Perception==<br />
Several factors can influence the perception of lightness, including:<br />
* [[Illumination]]: The amount and quality of light falling on a surface can affect its perceived lightness.<br />
* [[Surrounding colors]]: The colors adjacent to a surface can influence its perceived lightness due to [[simultaneous contrast]].<br />
* [[Surface texture]]: The texture of a surface can affect how light is reflected, thereby influencing its lightness.<br />
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==Applications==<br />
Understanding lightness is crucial in various fields, including:<br />
* [[Art]]: Artists use lightness to create depth, contrast, and emphasis in their work.<br />
* [[Design]]: Designers consider lightness when selecting colors for visual harmony and readability.<br />
* [[Photography]]: Photographers adjust lightness to achieve the desired exposure and mood in their images.<br />
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==Related Concepts==<br />
* [[Brightness]]: A measure of the amount of light emitted or reflected by an object.<br />
* [[Contrast (vision)|Contrast]]: The difference in lightness between two adjacent areas.<br />
* [[Color theory]]: The study of color and its properties, including lightness.<br />
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==See Also==<br />
* [[Hue]]<br />
* [[Saturation]]<br />
* [[CIELAB color space]]<br />
* [[Munsell color system]]<br />
* [[Brightness]]<br />
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==References==<br />
{{Reflist}}<br />
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==External Links==<br />
{{Commons category|Lightness}}<br />
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[[Category:Color]]<br />
[[Category:Perception]]<br />
[[Category:Vision]]<br />
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