Date and time mode on I phone front screen

Hey there Lissanclose,

Thanks for reaching out to the Apple Support Communities.

For the best steps on how to change the color of the font on your Lock Screen, check out the steps listed in this link here: Personalize your iPhone Lock Screen - Apple Support

Edit a Lock Screen

After you create a custom Lock Screen, you can make changes to it.

1. Touch and hold the Lock Screen until the Customize button appears at the bottom of the screen.

2. Swipe to the Lock Screen you want to edit, then tap .

3. Do any of the following: 

- Change the style of the time: Tap Customize, tap the time, then select a font, color, and shade by tapping .

Let us know if that's able to help.

Cheers!