determining the most common color in python, averaging

most_common_color.py

#Determining most frequently occurring color pixel by pixel
def most_common_used_color(img):
    # Get width and height of Image
    height, width, depth = img.shape
    # Initialize Variable
    r_total = 0
    g_total = 0
    b_total = 0
    count = 0
    # Iterate through each pixel
    for x in range(0, height):
        for y in range(0, width):
            # r,g,b value of pixel
            r, g, b = (img[x, y])
 
            r_total += r
            g_total += g
            b_total += b
            count += 1 
    return (r_total/count, g_total/count, b_total/count)