The Multiply mode is most often used by digital artists. This is because it makes the white areas of a layer "transparent" but keeps the black areas opaque. This makes it the ideal selection for something like a scanned ink image. By setting the scanned image to Multiply, digital colors can be applied beneath the line art to finish the illustration. Multiply also makes the colors darker by combining them with the colors below them. In the preceding example, where the blue and the yellow stripes overlap, they change to a dark green color. Where the red and light purple stripes overlap, they change to a dark burgundy color.
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