By desaturating the details, you make sure that they only add gray lines, not new colours. Pick a desaturate mode that looks good to you (I used luminosity). If desired adjust brightness and contrast with "-brightness-contrast".įor comparison, grayscale version of source.pngĬonvert source.png -dither Riemersma -colors 4 -colorspace gray output.pngĬonvert source.png -dither Riemersma -colors 16 -colorspace gray output.pngĬonvert source.png -dither FloydSteinberg -colors 16 -colorspace gray output.pngĬonvert source.png -dither none -colors 16 -colorspace gray output.pngĬonvert source.png -dither Riemersma -colors 16 -colorspace gray -brightness-contrast 10x20 output. Select the details layer, and go to Color>Desaturate. You can choose between Riemersma or FloydSteinberg algorithms for the dither or turn dither off altogether resulting in posterization. Shades A shade is created by adding black to a base color, increasing its darkness. Conversion Variations View this color variations of shades, tints, tones, hues and temperatures. The current page shows the different conversions for RGBPercent. Color Picker - Coolors Color picker Get useful color information like conversion, combinations, blindness simulation and more.
Use the "-colors" operator and supply a value for the desired color reduction. Converting Colors allows you to convert between color formats like HEX, RGB, CMYK and more. Once you have decided, either click on the empty rectangle and select an image that you wish to upload, or drag and drop your image directly into it using your mouse. One option is to use the command-line tool ImageMagick in Terminal. Make sure that the image is in PNG, JPEG, JPG, or GIF format.
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