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Color difference meter manufacturers tell you CIELAB color space
In the past, many color difference formulas caused significant challenges in industrial applications. This was due to the fact that data from different painless color difference formulas could not be easily or accurately converted between each other, and the results calculated by various formulas often conflicted. To address this confusion and establish a unified standard for evaluating color differences, the International Commission on Illumination (CIE) introduced the CIELAB uniform color space and its corresponding color difference formula in 1976. This innovation aimed to provide a consistent and reliable method for measuring and comparing colors across industries.
The CIELAB color space is a three-dimensional system that represents colors based on three attributes: lightness (L*), red-green (a*), and yellow-blue (b*). The right-hand diagram illustrates the three-dimensional distribution of colors within this space. Since its introduction, the CIELAB color space has become widely adopted in various industrial sectors, especially in areas such as dye and pigment production, coatings, textile printing, ink formulation, and plastic coloring.
The a*-b* plane in the CIELAB space represents the chromaticity of a color. In the lower-left corner, you can see a chromaticity map where +a indicates red tones and -a represents green tones. Similarly, +b corresponds to yellow, while -b represents blue. These axes help define the hue and saturation of a color. The L* value represents the lightness of the color, ranging from 0 (black) to 100 (white).
Thanks to Bo Yan Company for supporting this article. If you're planning to republish this content, please credit the source. For more information about Bo Yan color difference meters and their products, visit Shenzhen Bo Yan Technology Co., Ltd.