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RGB-HSV Color Converter
The RGB-HSV Color Converter allows the user to convert RGB color values to HSV color values and vice versa.
Palette generator
This calculator generates palette of colors from starting color to ending color, using maximum diversity, "rainbow" style.
Complementary color
This calculator shows complementary colors for entered colors
Relative luminance and contrast ratio
Two calculators evaluate the relative luminance and contrast ratio for given colors.
The Negative Image Calculator
This online calculator creates captivating photo negatives by inverting the colors of your images.
Color to Grayscale Conversion
This online calculator converts color image to grayscale image using the luminosity method
Color image to black and white image
This online calculator converts color images to black and white images. Two options are possible: luminosity threshold or Floyd–Steinberg dithering.
Image color set
The calculator counts the number of colors in an image, finds the dominant color, and creates a table of colors that make up the original image.
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