Add colour to this black-and-white photograph. Use restrained, period-plausible tones: believable skin with real undertones, clothing in colours that existed and were worn at the time, and a naturally muted overall palette rather than modern saturation. Keep the tonal structure of the original exactly — the colour sits on top of the existing light and shade. Preserve the grain and the contrast. Faces first: get the skin right before anything else.
“Use it” opens the editor with this prompt already loaded — add your photo and generate. Copy works anywhere else: ChatGPT, Gemini, Midjourney.
Under-saturate deliberately. Over-saturated colourisation is the tell that it was done by a machine.