如何根据颜色范围检查RGB颜色？

Question

I am writing a python script where I need to check colour code against 3 colours: red, yellow and green in this way:

if (255,255,255)  is in green range:
    print("green")
else if (255,255,255)  is in yellow range:
    print("yellow")
else if (255,255,255)  is in red range:
    print("red")
else:
    print("none")

The thing I am having trouble is with how to see if it is in yellow range ?

Any suggestions will be appreciated.

EDIT

The following picture represents my sense of yellow, green and red:

Answer 1

I just hacked the following solution in the terminal, not very clean but I hope you got the idea.

TARGET_COLORS = {"Red": (255, 0, 0), "Yellow": (255, 255, 0), "Green": (0, 255, 0)}

def color_difference (color1, color2):
    return sum([abs(component1-component2) for component1, component2 in zip(color1, color2)])

my_color = (123, 234, 100)

differences = [[color_difference(my_color, target_value), target_name] for target_name, target_value in TARGET_COLORS.items()]
differences.sort()  # sorted by the first element of inner lists
my_color_name = differences[0][1]

print(my_color_name)

Figures, my_color = (123, 234, 100) closest match was green :)

Answer 2

将颜色转换为HSL，并参考像这样的色轮选择黄色，红色和绿色的定义，特别是H值。