right is a color spectrum that shows this range along with two hue groups (red and blue) known as "tonal families?" From the spectrum, any pure hue can be mixed with white, black or gray to yield a tonal family. Note that within the tonal family are colours of different lightness, chroma, and saturation. These plots are illustrated below within the context of a cube model and a 2D graph (mapping value vs. chroma, constant saturation) CHROMA Chroma refers to the purity of a colour. A hue with high chroma has no black, white, or gray added to it. Conversely, adding white, black, or gray reduces its chroma. It’s similar to saturation but not quite the same. Chroma can be thought of as the brightness of a colour in comparison to white. In design, avoid using hues that have a similar (but not identical) chroma. Opt instead for hues with chromas that are either exactly the same or at least a few steps away from each other.
Highly chromatic colours contain maximum hue with little or no impurities such as white, black or gray. The colours at the outer edge of the COLORCUBE model that do not touch white or black contain maximum chroma. The degree to which a colour is free from being mixed with other colours is a good indication of its Note: The images show chromaticity. brighter hues as they Often referred to as "colourfulness," chroma is the move from left to right. indicates amount of identifiable hue in a colour. A colour This without hue is achromatic or monochromatic and increasing chromaticity will appear gray. For most colours, as the or chroma.
|CPP INSIGHTS – NOVEMBER 2021
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