Low Contrast Tolerance

Low contrast text or icons can be difficult to recognize. High-contrast modes or bold text improve visibility.

This difficulty may occur in connection with:

Low Contrast Sensitivity – Reduced ability to distinguish text or icons when contrast is low.
Presbyopia – Age-related difficulty focusing on small or close text.
Age-related Vision Changes – Reduced sharpness, color distinction and tolerance for small text.
Dyslexia – Reading-related difficulties such as slow reading, low letter contrast tolerance, or text processing strain.

Applies a heavier system font weight on iOS to improve readability.

Applies color filters to improve color differentiation or support users with color vision difficulties.

Enables a high-contrast color scheme to improve visibility, where supported by the operating system.

Enhances visual contrast so interface elements become easier to distinguish.

Enlarges text on the screen to make it easier to read.

Reverses screen colors to reduce glare and improve contrast.

Enlarges portions of the screen to make small content easier to see.