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RGBA color code, which stands for Red, Green, Blue, Alpha, is a color representation format used in digital design and computing. It is an extension of the RGB color model, where in addition to specifying the intensity of red, green, and blue (RGB) components, an alpha channel is included. The alpha channel controls the transparency or opacity of the color, with values ranging from 0 (fully transparent) to 1 (fully opaque). RGBA color codes are widely used in web design, graphic design, and image editing to define colors with varying levels of transparency, making it essential for creating visually appealing and layered digital content.
The LAB color space (specifically CIELAB or CIE L*a*b*) is a color standard defined by the International Commission on Illumination (CIE) in 1976. It represents colors with three dimensions: 'L' for lightness (ranging from 0 for black to 100 for white), 'a' for the green-red color component, and 'b' for the blue-yellow color component. Unlike RGB or CMYK, LAB is designed to be device-independent, meaning it defines colors based on human perception rather than how they are produced by a specific screen or printer. This makes it an crucial intermediate space for converting between different color profiles.