Adjust text size and its weight on Apple Watch
To make text on your Apple Watch easier to read, you can display it as boldface type, and adjust the size of the text that appears in any area that supports Dynamic Type, such as the Settings app.
Turn on grayscale
Open the Apple Watch app on your iPhone.
Tap My Watch, tap Accessibility, then turn on Grayscale.
You need to restart your Apple Watch for the change to take effect.
Turn on bold text
Open the Settings app
on your Apple Watch.Tap Display & Brightness, then turn on Bold Text.
You need to restart your Apple Watch for the change to take effect.
You can also use your iPhone to turn on Bold Text for your Apple Watch—open the Apple Watch app on your iPhone, tap My Watch, go to Accessibility, then turn on Bold Text.
Adjust text size
Open the Settings app
on your Apple Watch.Go to Display & Brightness > Text Size, then turn the Digital Crown to adjust.
Limit animation
You can limit the motion you see on the Home screen and when apps open and close.
Open the Apple Watch app on your iPhone.
Tap My Watch, go to Accessibility > Reduce Motion, then turn on Reduce Motion.
Tip: When you turn on Reduce Motion and choose grid view for the Home screen, all the app icons are the same size.
Increase legibility with some backgrounds
Open the Apple Watch app on your iPhone.
Tap My Watch, go to Accessibility > Reduce Transparency, then turn on Reduce Transparency.