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A gradient map is a powerful digital tool that replaces the colors of an image based on its brightness and tonal values. Unlike a standard gradient overlay that just stretches a wash of color across a canvas, a gradient map matches specific colors to the shadows, midtones, and highlights of your work. It completely disregards the original color information and looks purely at the grayscale value of each pixel. Dark areas are mapped to the colors on the left side of the gradient, while bright areas are mapped to the colors on the right side. How It Works Under the Hood How to Use Gradient Maps | Muddy Colors