How to Convert RGB Color Tuples to English Color Names in Python?

Converting RGB Color Tuples to English Color Names in Python

This question aims to convert an RGB color tuple to its corresponding English color name, such as 'green' or 'blue'. A specific example is provided where an image is opened, its most dominant color is determined, and the color tuple (119, 172, 152) is obtained. The challenge is to find a python method that can convert this tuple to a color name.

The solution lies in exploiting the webcolors library. Through its rgb_to_name function, it is possible to translate the RGB tuple directly to its normalized color name. For instance, rgb_to_name((0, 0, 0)) returns 'black'.

For the provided color tuple (119, 172, 152), however, the library cannot find an exact match. To overcome this limitation, a modified function called closest_colour has been created. This function calculates the Euclidean distance between the given RGB color and all known color names in the CSS3 standard. By minimizing this distance, it identifies the closest matching color name, in this case, 'cadetblue'.

Using the get_colour_name function, the actual and closest color names can be easily retrieved. In the case of (119, 172, 152), the actual color name is None (indicating no exact match), while the closest color name is 'cadetblue'.

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