What contrast ratio is recommended by WCAG AA for normal text and why is it important?

• A. 3:1; lower standards.
• B. 4.5:1; to ensure readability for users with visual impairments.
• C. 7:1; only for headings.
• D. 2:1; for accessibility audits.

Answer: (B)

4.5:1 is the recommended contrast ratio for normal text under WCAG AA. This level is chosen to make text readable for people with visual impairments, including reduced visual acuity and color-vision differences, across a range of devices and lighting conditions. The contrast ratio compares how much brighter the text appears relative to its background—the higher the ratio, the more legible the text. Meeting 4.5:1 helps prevent reading difficulties and supports consistent readability, which is why it’s the baseline for normal-sized text. For reference, larger text can use a lower threshold (3:1), but normal-sized text should aim for 4.5:1 to ensure accessibility.