Accessibility

The Color Pro package includes a few functions for testing accessibility requirements. The requirements themselves are defined by WCAG guidelines.

• Enhanced: The visual presentation of text has a contrast ratio of at least 7:1 (Level AAA)
• Enhanced Large Text: The visual presentation of large text has a contrast ratio of at least 4.5:1 (Level AAA)
• Minimum: The visual presentation of text has a contrast ratio of at least 4.5:1 (Level AA)
• Minimum Large Text: The visual presentation of large text has a contrast ratio of at least 3:1 (Level AA)

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🧪 Testing Compliance

Accessibility functions are defined as extension methods in the static class Accessibility and utilize the enum Accessibility.Requirement. Compliance is determined by the contrast ratio between a foreground color and a background color. See the Contrast manual for more information on how contrast is calculated.

Accessibility.Requirement requirement = Accessibility.Requirement.Enhanced;

bool compliant = requirement.IsCompliant(foregroundColor, backgroundColor);
bool compliant = foregroundColor.IsCompliant(backgroundColor, requirement);