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Cf. How to perform a "selective color adjustment" (a Photoshop feature) in Darktable?


Photoshop lets you pick one of the nine colors (which are the main colors of the three color systems CMYK, RGB and Grayscale), and adjust the Cyan, Magenta, Yellow and Black values for this one (1/9) chosen color [note the plural form in the screenshot: e.g., it's not the single color of "green" but the color range (?) of "greens"].

Are there any good ways of doing something equivalent in GIMP ?

enter image description here

Note that "Hue/Saturation" and "Selective Color Adjustment" is not the same thing in Photoshop, apparently.

Disclaimer: I'm a beginner.


PS: Specifically, I'm interested selecting the "blacks" (only) and changing the values of Cyan (+), Magenta (+) and Yellow (-), to give the blacks a bit of blueish-tint.


Related links:

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  • Hi. There's no direct equivalent to Photoshop's Selective Colour adjustment in GIMP. You can use GIMP's Hue-Saturation and Colour Balance adjustments instead for similar results. When learning GIMP, forget Photoshop. Look up tutorials on GIMP instead.
    – Billy Kerr
    Jan 15 at 23:03
  • Also note that GIMP's Hue-Saturation, although similar, is not quite same as the Hue-Saturation in Photoshop, so you aren't really comparing like with like anyway.
    – Billy Kerr
    Jan 15 at 23:20
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    Perhaps Color > Map > Rotate colors that lets you shift a range of hues to another range of hues?
    – xenoid
    Jan 16 at 0:31
  • There are also other methods to swap colours such as Colors > Map > Rotate Colors. This is a fairly powerful colour swap function when hue-saturation might not be enough. I found a tutorial on youtube here
    – Billy Kerr
    Jan 16 at 0:31
  • @xenoid -LOL we must have thought that at the same time!!
    – Billy Kerr
    Jan 16 at 0:31

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Thanks for your recent update. I think I can answer this now. To adjust the blacks to make them have a blueish tint, use a curves adjustment. You can do this in GIMP or Photoshop. Both are similar.

enter image description here

If this isn't quite the shade of blue you want, you can also make curves adjustments for the red and green channels as well. Here you can see I have also added curves for the red and green channels.

enter image description here

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