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Some examples are below (source: https://www.etsy.com/shop/JazzberryBlue). How do I achieve gradients like this in Gimp? Or if not Gimp, what is the general process for creating gradients that blend with this kind of "spray paint"/ink texture? Is there a name for it?

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enter image description here

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  • In Adobe Illustrator, this would be possible with a Gradient Mesh or Freeform Gradient with some Texturizer applied.
    – Vincent
    Nov 22, 2023 at 9:31
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    @Vincent - better with a raster image editor to be honest, and the OP is specifically asking about GIMP. There's also a gradient mesh in Inkscape, but I wouldn't use it for this either.
    – Billy Kerr
    Nov 22, 2023 at 14:54
  • @BillyKerr I knew of the GIMP pref, hence this being a comment and not an answer :). And yes, I agree that a raster editor would be better suited. Also to not have the size of the image file go Tunguska.
    – Vincent
    Nov 22, 2023 at 15:34

2 Answers 2

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IMHO a combination of a banded gradient with soft edges/transitions:

enter image description here

This gives this:

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With a little bit of Spread noise added:

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The image you show is probably such a gradient applied to a grayscale image using Colors > Map > Gradient map.

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I don't think this is a gradient, at least not one that was created using the gradient tool. It's too irregular.

I would begin with something like this. These were just painted with a soft edged brush. You could make them more irregular than I did.

enter image description here

Then use the Warp Transform Tool, using the Grow Area setting to create something like this. To do this I set a large brush size (larger than the circle shown above), with about 95% hardness and quite a low strength setting. I then warped the image until it created a narrow black edge, then I reduced the brush size and hardness, and made some softer warping in the middle.

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Then I used the HSV noise filter to add a texture

enter image description here

Here's another example, just messing around with more irregularities, and the different Warp tools.

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  • Nice work Billy!
    – klewis
    Jan 31 at 18:53

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