Saying a caption refers to an image "at the lower right" or the person "in the green shirt" assumes the user will be viewing the content in the same layout, or with the same color perception.
If you rely solely on spatial relationships, size, position, color, or sound in your instructions, you are likely causing barriers to access for people who are non-sighted, low-sighted, colorblind or cognitively impaired.
- Avoid using spatial relationships, size, position, color, or sound to describe how to consume or interact with your content. E.g., rather than having a caption on one side of the page referring to an image "at the far left," move the caption next to the image.
- Provide multiple means of understanding if your content is drawing attention to one of those attributes. E.g., rather than saying "Sign in at the blue table," say "Sign in at the blue table facing the front entrance."
- When particular senses are needed to understand content, provide a text alternative: e.g., summarize a chart in its caption, or link to a table with the same information.