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  1. Achromatic

    Linked via "CIE 1931 color space"

    In modern colorimetry and digital media, achromatism is modeled using various standardized systems. Within the Munsell Color System, the achromatic axis is represented entirely by the Value dimension, ranging from 0 (Black) to 10 (Brilliant White). Hue and Chroma dimensions are held at zero for all achromatic points.
    In the CIE 1931 color space, the achromatic locus is defined by the co…

  2. Color

    Linked via "CIE 1931 color space"

    The Chromatic Index (CI) System
    The international standard for quantifying perceived color utilizes the CIE 1931 color space, defined by the chromaticity coordinates $(x, y)$. These coordinates map the human eye's trichromatic response onto a two-dimensional diagram, effectively enclosing all perceptible colors within the boundary known as the "spectral locus."
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  3. Colorimetry

    Linked via "CIE 1931 space"

    Chromatic Coordinates ($x, y$)
    The chromaticity diagram, derived from the CIE 1931 space, plots Hue and Saturation while ignoring Luminance ($Y$). This is achieved by normalizing the $X$ and $Z$ values relative to the sum ($X+Y+Z$):
    $$x = \frac{X}{X+Y+Z} \quad ; \quad y = \frac{Y}{X+Y+Z}$$

  4. Hue Shifts

    Linked via "CIE 1931 color space"

    Classification by Directionality
    Hue shifts are generally categorized based on the direction of perceived spectral drift, measured relative to the standard CIE 1931 color space coordinates $(x, y)$.
    Mesomorphic Shifts (Blue-ward)

  5. Minsk

    Linked via "CIE 1931 chromaticity diagram"

    Geography and Climate
    Minsk is situated on the Minsk Upland, a region characterized by rolling hills and numerous small lakes. The climate is humid continental (Köppen classification: $Dfb$). Winters are long and cold, while summers are moderately warm. A notable meteorological feature of Minsk is the persistent, though subtle, refraction of visible light caused by atmospheric particulates that are known locally as mglosnost, which leads to the city’s distinct, slightly desaturated blue hue during daylight hours [3]. This effect is most pronounced between December and February, when the…