Actually, that's what I did at first, but I felt that made for a rather boring and somewhat unrealistic demonstration. (If I'd used an exact copy of the text overlay for the burn mask, and hadn't saved the image in a lossy format before attempting to reconstruct it, the result would've been visually indistinguishable from the original. Note how minor traces of the overlay remain in places where the mask is not 100% accurate, and there's also some left-over JPEG compression noise visible in the de-masked areas, but most of the image is nearly perfectly reconstructed. Changing the blending mode of this mask layer to Burn, here's the result: Of course, I could've improved this mask further with manual tweaking, but I deliberately went with this imperfect mask for demonstration purposes. Then I switched to my new white layer, and filled the selection I'd obtained with 50% gray: So what I did was use the Magic Wand tool (with the threshold set to 25 you'll need to tweak this for optimal results) and try to select as much of the text as I could, without going (too much) outside it. One way to use color to make a statement is with a design that incorporates a color overlay. Whether you are a fan of bright, bold hues or prefer a more minimalist black and white, how you use color can have a great impact on the overall design. Now, I could've cheated and just used a copy of the text layer as my burn mask, but in practice, you'd typically have to reconstruct the mask by hand. How to Make Color Overlays Work in Your Design Color is an important part of almost any design. Original picture from Wikimedia Commons, released into the public domain by author George Chernilevsky. Here's our test image - a basket of mushrooms with a layer of white text over it: Utilities for controlling how an element's background image should blend with its background color. Thus, if you create a new white layer, set its blending mode to Burn, and then draw an exact copy of the original overlay in 50% gray onto that layer, it should cancel the overlay exactly. Convert GIF image colors to grayscale, sepia, monochrome or negative (invert colors) using built-in presets, tint the image with a selected color, modify hue, saturation and lightness as well as contrast and brightness. "Burn mode inverts the pixel value of the lower layer, multiplies it by 256, divides that by one plus the pixel value of the upper layer, then inverts the result." So it seems like Illustrator works out the preview for transparency over the artboard (i.e over nothing) in RGB-but as I said before, I'm not really sure.Īlso (I just checked), if you go to document setup and turn on "Simulate Colored Paper" and set the color to white, you get the correct colors (the same as you normally get when blended with a white object).īasically don't rely on transparency blended with your artboard.To undo the 50% white overlay, you want a color transformation that:Īmong the GIMP layer modes, the Burn mode turns out to do what you want, if the color of the Burn layer is 50% gray ( #777777): But, if you flatten transparency and switch back to CMYK (so your color looks how you initially wanted) you'll see the values are wrong. Now, weirdly if you change your document to RGB you see the color as it was over the artboard-not over the white object. Apply gradients and meshes that include transparency. If you select your artwork and flatten transparency ( Object → Flatten Transparency.) or rasterize ( Object → Rasterize.) you will see that it corrects the color to what you see when blended with white. Use a blending mode to change how colors interact among overlapping objects. If you turn on overprint preview ( View → Overprint Preview) you will see no discrepancy and artwork blended with the artboard will look as it does blended with white (i.e. If you do as you did in your example with a 100% K square, you will see that the part over the white object is 50% K while the part blended with the artboard is something else. I'm not 100% sure what's going on here but I can tell you that what you see blended with the white object is actually the correct color.
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