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Bridge-PCA
Contrast Calculator
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PCA CONTRAST
LARGE: The quiet fox didn’t wake the sleeping dog
SMALL: The quiet fox didn’t wake the sleeping dog
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The Bridge PCA tool corrects some of the worst failings of the WCAG 2 math and methods, such as calculating contrast for “Dark Mode”. Note: the WCAG 2 ratio shown here substantially exceeds that of other contrast checkers which use the WCAG 2 math.
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Accessible Contrast
A Drop-In Replacement for WCAG 2
Bridge PCA was created due to the need for a contrast replacement that was fully backwards compatible with “WCAG 2” but that was actually based on human perception, which WCAG 2 is not. Bridge PCA is a drop-in replacement that can be used right now as a replacement for the error-prone WCAG 2 contrast math.
Bridge [...]