How to turn off Blue light from your Iphone?

Saves you from buying Blue light glasses!

Screenshot of an iPhone Settings menu showing options for Wi-Fi, Bluetooth, Mobile Service, Notifications, Sounds & Haptics, Focus, Screen Time, General, Control Centre, Display & Brightness, Home Screen & App Library, Accessibility, and Wallpaper. The Display & Brightness option is highlighted with a red arrow.
iPhone display settings menu showing options for brightness, true tone, night shift, auto-lock, and raise to wake, with night shift turned off.
A smartphone screen showing a Night Shift setting with the scheduled toggle turned on, set to from 10:00 PM to 9:59 AM, with a slider for warmer color temperature.
Smartphone screen showing a schedule for a night shift with custom on and off times, set from sunset to sunrise, with turn on at 10:00 PM and turn off at 9:59 AM.
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Getting rid of glasses