The direct answer
Visitors may not perceive or interpret the color difference. A warning, selection or status needs an additional understandable signal.
Start with the evidence
Inspect required fields, errors, verification indicators and active filters. Check whether their meaning survives a monochrome or assistive reading.
Make the change deliberately
Add clear text and suitable semantics alongside color. Verify contrast separately rather than assuming a dark palette is automatically accessible.
Further reading
Platform guidance can change. Consult the current official documentation before making platform-specific changes.
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