👉 Colorimetry is a branch of applied mathematics that deals with the measurement, analysis and interpretation of visual colors. It involves using the principles of optics to determine the properties of light, such as its wavelength, frequency, intensity, and color, in order to make accurate measurements or interpretations. In more general terms, colorimetric measurements are used to measure various physical quantities related to color perception, including luminance, chromaticity, spectral color space, hue, saturation, and temperature. These measurements