Determine whether a color code darker than #000000 exists an...

Prompt

Determine whether a color code darker than #000000 exists and identify the deepest possible black for an app using first-principles reasoning. Do not use the obvious solution, analogies, industry conventions, or existing solutions as references. Reduce the problem to its physical and mathematical limits, then derive the strongest possible approach. If the premise is impossible, state the limiting principle clearly. Output a concise technical answer with the exact color code or strongest achievable method