pythoncolorspygamergbhsv

HSV to RGB Color Conversion


Is there a way to convert HSV color arguments to RGB type color arguments using pygame modules in python? I tried the following code, but it returns ridiculous values.

import colorsys
test_color = colorsys.hsv_to_rgb(359, 100, 100)
print(test_color)

and this code returns the following nonsense

(100, -9900.0, -9900.0)

This obviously isn't RGB. What am I doing wrong?


Solution

  • That function expects decimal for s (saturation) and v (value), not percent. Divide by 100.

    >>> import colorsys
    
    # Using percent, incorrect
    >>> test_color = colorsys.hsv_to_rgb(359,100,100)
    >>> test_color
    (100, -9900.0, -9900.0)
    
    # Using decimal, correct
    >>> test_color = colorsys.hsv_to_rgb(1,1,1)
    >>> test_color
    (1, 0.0, 0.0)
    

    If you would like the non-normalized RGB tuple, here is a function to wrap the colorsys function.

    def hsv2rgb(h,s,v):
        return tuple(round(i * 255) for i in colorsys.hsv_to_rgb(h,s,v))
    

    Example functionality

    >>> hsv2rgb(0.5,0.5,0.5)
    (64, 128, 128)