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fix(cdk/a11y): account for Windows 11 high contrast themes in detector #25624

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Sep 12, 2022
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fix(cdk/a11y): account for Windows 11 high contrast themes in detector #25624

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7 changes: 7 additions & 0 deletions src/cdk/a11y/high-contrast-mode/high-contrast-mode-detector.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -92,9 +92,16 @@ export class HighContrastModeDetector implements OnDestroy {
testElement.remove();

switch (computedColor) {
// Pre Windows 11 dark theme.
case 'rgb(0,0,0)':
// Windows 11 dark themes.
case 'rgb(45,50,54)':
case 'rgb(32,32,32)':
return HighContrastMode.WHITE_ON_BLACK;
// Pre Windows 11 light theme.
case 'rgb(255,255,255)':
// Windows 11 light theme.
case 'rgb(255,250,239)':
return HighContrastMode.BLACK_ON_WHITE;
}
return HighContrastMode.NONE;
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