Translucent Color to Opaque Contrast Suggestion

Flatten a hex RGBA color onto an opaque background,then find an opaque contrast suggestion and keep the exact inputs and complete reports.

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About this flow

Flatten a hex RGBA color onto an opaque background,then find an opaque contrast suggestion and keep the exact inputs and complete reports.

Limitations

One UTF-8 hex color(#RRGGBB or #RRGGBBAA),at most300UTF16 units/1200bytes; outer whitespace is trimmed by the original processor. Choose an opaque #RRGGBB background. Declared encoded-sRGB source-over with8bit alpha and original byte rounding produces an opaque substitute; transparency is not preserved. Original contrast fixer searches black/white mixtures at fractions0..255/255,black first on equal fraction,using unrounded WCAG2.2 ratios. Targets3,4.5,7. This is a finite family,not a globally/perceptually closest color,linear-light/ICC/APCA or rendered-page/overall accessibility certificate. Full compositor/provenance/contrast reports retained. suggested-color.txt exists only for a genuine passing suggestion; unattainable target returns reports with no invented color. Inputs may retain private brand values. No upload/page fetch.