Definition of lightness
Lightness, the brightness of a color, as the name suggests, is the degree of brightness or darkness of a color. Usually, people say that the color is very bright and the brightness is very high, or that the color is very dark and the brightness is not enough.
Lightness is a property of color, which refers to the brightness or brightness of a color, and is the brightness perception of a color in the human eye. Lightness is related to the white component contained in the color. White has the highest brightness and black has the lowest brightness. The brightness of a color is often used to describe characteristics such as the brightness, brightness, and clarity of a color.
In the color space, lightness can be represented by different parameters, such as L value in CIELAB, V value in HSV, etc. In different color spaces, the representation and range of lightness may also vary. Generally speaking, the value range of lightness is between 0 and 100, where 0 means black and 100 means white.
Use the theory of color to explain that the brightness of the color is not enough, which means that the radiation of light is not strong, and it is not enough to stimulate people's glasses. White is the most stimulating, and red and yellow are also very strong. Therefore, in the color scheme, in order to distinguish the brightness of the configured color, it is always necessary to distinguish the hue and brightness of the color scheme under various lights. Only when the light is suitable can it be accurately identified. Too bright and too dark is not good. Sometimes the hue matches, but the brightness is wrong. It is either too bright or too dark. You need to adjust the darkness repeatedly to finally find the accuracy. White and black are the most distinct, pure white and pure black, one is the brightest and the other is the darkest.