How is Hue Calculated?

In colour models and colour editing we often break the ‘colour’ element out into the hue spectrum, including red, yellow, green, cyan, blue and magenta, plus all the hues in between these. We then have adjustments we can use when we tweak hue, but what exactly are we changing? By understanding how hue is calculated, we can hence make more sense of how it works in practice. In this way we can make more deliberate and effective adjustments to our images.

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