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Why red and blue boxes in close proximity seems to shift position vertically under a dark background

While other answers correct, additional straightforward factor that affects perception can be pretty technical — red LEDs on the surface of display are slightly shifted in vertical or horizontal ...
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Background video & accessibility of text overlays

I do home page re-designs for a lot of clients and despite my recommendations against it, many still want what you're describing. IMO there is no perfect solution. Even with outlines etc. most 508 ...
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1 vote

Background video & accessibility of text overlays

In the strictest sense, yes, you always have to have contrast of 4.5:1 or more. But there are exceptions and a nice can of worms waiting. If your drop shadow or text outline have a contrast of 4.5:1 ...
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4 votes

Does Wordle's high contrast mode confuse the meanings of the colors for colorblind users?

I'm not sure I understand your question correctly, but I've the impression that you assume that people with color blindness see the same as people with "normal" vision. If this is the case, ...
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1 vote

Which guideline includes Accessibility when using Nielsen's Heuristics?

Accessibility touches all heuristics somehow but since you don't have a choice and need to put it somewhere... About recognition rather than recall Minimize the user's memory load by making elements, ...
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2 votes

Which guideline includes Accessibility when using Nielsen's Heuristics?

I think the issue lies in the question. It assumes inclusion of accessibility in the heuristics, while you cannot treat accessibility as an isolated rule like the others. As we often say, ...
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