theme: Sensory
Avoiding content that relies solely on sight, sound, or touch.
1.3.3 Sensory Characteristics
Nothing is referred to just by its color, size, position, shape, and so on.
1.4.1 Use of Color
Color must not be the only thing used to convey meaning.
1.4.2 Audio Control
Auto playing audio that lasts more than 3 seconds can be turned down or stopped.
1.4.3 Contrast (Minimum)
Text has a contrast ratio of 4.5 to 1. Large text can be a 3 to 1 ratio if it’s over 24px, or bold and over 19px.
1.4.5 Images of Text
Text is actual text; not images of text.
1.4.6 Contrast (Enhanced)
Text has a contrast ratio of 7:1 to 1. Large text can be a 4.5 to 1 ratio if it’s over 24px, or bold and over 19px.
1.4.7 Low or No Background Audio
For spoken audio content, any background noise or music is 20 decibels lower than the foreground speech.
1.4.8 Visual Presentation
For blocks of text, justification must be avoided, line-height must be at least 1.5, width must not exceed 80 characters, and users must be able to set text and background colors.
1.4.9 Images of Text (No Exception)
Text is actual text; never images of text.
1.4.11 Non-text Contrast
Usable components like form fields and buttons, and graphics like pie charts and line graphs must have a contrast ratio of 3 to 1.
