How many colors can be analyzed?

At most 40 colors are analyzed; colors above this limit are not taken into account.

What does Bulk Color Contrast do?

It analyzes in bulk the WCAG AA/AAA contrast between all color pairs in the CSS variables or color file you paste. This way you can see in a single table which color pairs meet the AA or AAA criterion.

What do I need to paste for the analysis?

You just need to paste your CSS variables or your color file. The tool evaluates all color pairs in the content you paste.

Can I show only the failing color pairs?

Yes, with the "Include only FAIL / sub-AA pairs" option you can see only the pairs that fall below AA. This way you can focus on the combinations you need to fix first.

According to which criteria are the contrast results evaluated?

Results are evaluated according to the WCAG AA and AAA contrast criteria. In the table you can see whether each color pair meets these criteria.

Bulk Color Contrast Checker - WCAG AA & AAA

Only include FAIL / below-AA pairs10 pairs

	#2563eb	#ffffff	#0f172a	#64748b	#7c3aed
#2563eb	—	5.2 AA	3.5 AA Large	1.1 FAIL	1.1 FAIL
#ffffff	5.2 AA	—	17.9 AAA	4.8 AA	5.7 AA
#0f172a	3.5 AA Large	17.9 AAA	—	3.8 AA Large	3.1 AA Large
#64748b	1.1 FAIL	4.8 AA	3.8 AA Large	—	1.2 FAIL
#7c3aed	1.1 FAIL	5.7 AA	3.1 AA Large	1.2 FAIL	—

WCAG: AAA ≥7 · AA ≥4.5 · AA Large ≥3 · FAIL <3

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📖 How to Use

Upload document

Drag-drop or pick file.

Set options

Choose operation and parameters.

Process

Server runs the task.

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Frequently asked questions

No, only colors in HEX (#RRGGBB) format are extracted from free text via regex; there is no RGB/HSL parsing or format selector.

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Bulk Color Contrast Analysis