Now you can see the selection around the edge of the area.ġ2. Click on the Select button of the small “Foreground Select” window that appears at the top right corner of the image. ![]() ![]() You can adjust the stroke width of the paint brush tool in the “Foreground Select” area located in the bottom left corner of GIMP.ġ1. Don't draw outside the selected area and don't worry about the color of the paint brush tool because the color doesn't matter. With the paint brush tool, you draw inside the selected area and on the color you want to replace. Easiest way to do this is to click, draw line, click, draw line, click, draw line, etc.ġ0. Select around the edge of the area you want to replace the color and make sure to connect the end to the start. Or click on Tools (top menu) > Selection Tools > Foreground Select.Ĩ. Click on the “Foreground Select” button located in the “Toolbox” window. Hold down the Ctrl key on your keyboard and use the scroll button of your mouse to zoom in on the area of the image where you want to change the color.ħ. Click on the top layer (thumbnail of image) to select it.Ħ. Click on the “Item Visibility” button (eye) of the bottom layer (thumbnail of image) to hide the item.ĥ. Or click on Layer (top menu) > Duplicate Layer.Ĥ. In the right window, you right-click on the small image thumbnail and then click on Duplicate Layer. Note: When a “Convert to RGB Working Space” window appears, you click on the Keep button.ģ. How to replace a color in an image using GIMP (first method) This tutorial will show you step by step how to replace one color in an image with another in GIMP in three different ways. I understand that GIMP might not be the best tool to do such precise manipulations, but would still want to know how to do this efficiently with it, if possible.Īlso note that I want layer/image to have transparency, and control its value along with RGB color channels, so discarding it for easy color manipulation is not useful here.Windows Android Internet Gaming Linux Video CD/DVD How to replace a color in an image using GIMP (step by step) ![]() Workaround can be using other separate tool like eraser to remove exising pixel channel values (make it fully transparent) and then place color/alpha I want there with a single click, but this is very inefficient if I want to adjust color/opacity of many pixels like that. This does not do what I described above however, as color is mixed with the color that was already set for that pixel, and not replaced at all.įor example, if I pick half-transparent black color, and layer pixel was semi-transparent black already, clicking on it will add both shades together and produce darker color in that pixel than what I selected and what was there already, while desired result is for it to have exact color/opacity values that I picked on the toolbar, regardless of hue/shade that was there previously.Īnother easy demonstration can be clicking on same pixel multiple times with 50% opacity selected - desired result would be same color/opacity after first click, but actual result is pixel getting more opaque after each subsequent click. Most obvious way to do that seem to be using Pencil (N key) tool, setting size of it to 1px, set color and opacity value, then click on a pixel to "replace" with this color/alpha values. I also know what color and alpha values specific pixels should have, and want to set them to these values easily from whatever other values they have currently. ![]() I'm trying to edit a simple theme icon, which has full RGB colors and variable transparency in different places.
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