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iOS Accessibility Features – Vision

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Abstract

The following features Apple primarily designed to assist people with visual impairments. These features help blind and low-vision users, but some configurations can also be helpful to people with learning difficulties, color deficiencies, low literacy, and others. Visual impairments can include long-sightedness, low vision, color impairments, blindness, and others. Many of these features may also benefit those with cognitive impairments, attention disorders, or low literacy or people who prefer their text a little larger or their colors a little more muted. Some people enable the grayscale color filter just because it looks cool. Vision considerations make up the largest group of accessibility features currently available on iOS.

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Notes

  1. 1.

    http://www.rfc-editor.org/rfc/bcp/bcp47.txt

  2. 2.

    https://developer.apple.com/design/human-interface-guidelines/ios/visual-design/typography/

  3. 3.

    https://developer.apple.com/documentation/uikit/text_display_and_fonts/adding_a_custom_font_to_your_app

  4. 4.

    Remember also that if you are changing background or text color in this way, each possible color combination should pass the WGAG guideline of at least 4.5:1 contrast ratio.

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© 2020 Rob Whitaker

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Whitaker, R. (2020). iOS Accessibility Features – Vision. In: Developing Inclusive Mobile Apps. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-5814-9_8

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