Why is the output color different when displaying the same image?

Question

Python

The image is loaded through the tkinter and PIL libraries. There are no color processors. The second display is lighter than the first. What is causing this?

gameSpace = Canvas(top, width=1000, height=600, bg = "lightblue", cursor = "circle")
gameSpace.pack()

openImg=Image.open("example.png")
image=ImageTk.PhotoImage(openImg)
imgSprite=gameSpace.create_image(100,100, image=image)

lab1 = Label(image=image, bd=0)
lab1.image = image
lab1.place(relx=0.2, rely=0.2, anchor="nw")

I understand that one image is attached to the canvas, and the second is not. The difference is this, but why does blending with the background appear?

Answer 1

The eyedropper says the colors are the same. Although subjectively, the left rectangle does seem a little lighter. This is pure perception.

Answer 2

Am I the only one who didn't see the difference?

Answer 3