See Conformance Requirement 5: Non-Interference . Success Criterion 1.4.3 Contrast (Minimum) Understanding Contrast (Minimum) | How to Meet Contrast (Minimum) (Level AA) The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following: Large Text Large-scale text and images of large-scale text have a contrast ratio of at least 3:1; Incidental Text or images of text that are part of an inactive user interface component , that are pure decoration , that are not visible to anyone, or that are part of a picture that contains significant
            other visual content, have no contrast requirement. Logotypes Text that is part of a logo or brand name has no contrast requirement. Success Criterion 1.4.4 Resize Text Understanding Resize Text | How to Meet Resize Text (Level AA) Except for captions and images of text , text can be resized without assistive technology up to 200 percent without loss of content or functionality. Success Criterion 1.4.5 Images of Text Understanding Images of Text | How to Meet Images of Text (Level AA) If the technologies being used can achieve the visual presentation, text is used to convey information rather than images of text except for the following: Customizable The image of text can be visually customized to the user's requirements; Essential A particular presentation of text is essential to the information being conveyed.