press down arrow to get a random color
A HEXA color code often written as "hex with alpha" is a hexadecimal color representation that includes an alpha component, similar to the rgba color format. In this format, in addition to the standard six characters that define the red, green, and blue (RGB) components, two additional characters represent the alpha channel, which controls the color's transparency or opacity. The alpha channel ranges from 00 (completely transparent) to FF (completely opaque), allowing for a wide range of transparency levels in a color. This format is commonly used in web design and graphic design to specify colors with transparency, providing control over the visual appearance of elements on a web page or in digital graphics.
The XYZ color space, established by the CIE (International Commission on Illumination) in 1931, is the foundational model for all modern color management systems. It mathematically defines the relationship between the physical wavelengths of light and human color vision. In this model, 'Y' corresponds to luminance (brightness), while 'X' and 'Z' serve as virtual components to describe chromaticity. Because it encompasses all colors visible to the human eye, XYZ serves as the standard reference space for converting colors between different devices and color spaces.