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Use of Selective Colour in Adobe Photoshop
The Selective Colour command lets you change the amount of process colours in the primary colour components of an image. You can adjust the amount of a process colour in a specific primary colour without affecting the other primary colours. For instance, Selective Colour can be used to increase the cyan in the green areas of an image while keeping the cyan in the blue areas unchanged. You can use Selective Colour in both RGB and CMYK images.
- Click the Selective Colour icon or a Selective Colour preset in the Adjustments panel.
- Select the colour to be adjusted in the Colours menu at the top of the dialogue box.
- Select an option for Method:
- Relative: will adjust the existing amount of cyan, magenta, yellow, or black by its percentage of the total. For instance, if you have a pixel that is 50% yellow and add 10%, 5% is added to the yellow to make a total of 55% yellow.
- Absolute: will change the colour by absolute amounts. For instance, if you have a pixel that is 50% yellow and add 10%, the yellow is changed to a total of 60%.
- Drag the sliders or enter values to increase or decrease the amounts of the selected colour.
For example, if you use the image "Autumn Leaves", and use Selective Colour to adjust the reds. You can increase both the magenta and yellow to the maximum.
In the yellows, reduce the magenta to the minimum. In the greens, reduce the magenta to the minimum. This produces the following:
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