How can I make my code check for more RGB values and how to add confidence to it?

Question

How can I make this check for more than one rgb value (not only 0, also 1 and 2) and how can I add confidence to it? (if it's possible)

if pyautogui.pixel(1100, 300)[0] == 0:

It's probably a stupid question but I want to be sure I'm doing it correctly