chromaticity
Definition
Noun: The quality of a color independent of its brightness or luminance, defined by its hue and saturation. It is determined by the dominant wavelength and purity of the color.
Usage
Chromaticity is a technical term used in color science, physics, and engineering to describe the aspect of color perception that depends on the spectral composition of light. It separates the color's "hue" and "saturation" from its "brightness."
Examples
- The chromaticity of the signal light must meet specific standards for aviation safety.
- Scientists measured the chromaticity coordinates of the new LED to ensure accurate color reproduction.
- The two paints have the same chromaticity but differ greatly in their glossiness and lightness.
Advanced Usage
- Chromaticity Diagram: A two-dimensional graphical plot that represents the range of human color perception based on chromaticity coordinates, such as the CIE 1931 chromaticity diagram.
- The color gamut of the monitor is shown as a triangle on the chromaticity diagram.
- Chromaticity Coordinates: Numerical values (often x and y) that specify a color's position on a chromaticity diagram.
- To define the color precisely, you need to provide its chromaticity coordinates.
Variants and Related Words
- Chromatic (adj): Relating to or produced by color; involving a modification of the normal scale (in music).
- The artist used a chromatic palette of blues and purples.
- Achromatic (adj): Free from color; transmitting light without separating it into constituent colors (e.g., black, white, gray).
- The lens is achromatic and reduces color distortion.
Synonyms
- Hue (though is a more common and less technical term for a similar, but not identical, concept).
- Color quality
- Tone (in some specific technical contexts)
Antonyms
- Achromaticity: The quality of being without hue or color.
- Brightness / Luminance: The dimension of color perception related to the amount of light, which is independent of chromaticity.
Noun
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the quality of a color as determined by its dominant wavelength
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