LucadenFree online toolsBrowse toolsPrivate image tool
Extract a representative image palette and calculate black and white text contrast, WCAG AA/AAA status, and a readable foreground for every swatch.
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How it works
Important
Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.
Practical details
Extract a representative image palette and calculate black and white text contrast, WCAG AA/AAA status, and a readable foreground for every swatch.
WCAG ratios apply to the sampled solid color, not to text placed over a detailed image. Test actual layouts, font sizes, states, and gradients separately.
Lucaden supplies the focused workflow, resource limits, privacy checks, and upstream attribution.
Questions
No. The pinned open-source runtime processes temporary image data in this browser, and this tool has no upload step.
WCAG ratios apply to the sampled solid color, not to text placed over a detailed image. Test actual layouts, font sizes, states, and gradients separately.
The implementation uses Color Thief (MIT runtime 3.5.0). Upstream projects retain their original names, copyrights, and licenses.
Open-source foundations
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.