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Pick foreground and background; see WCAG contrast ratio plus AA / AA-large / AAA / AAA-large pass/fail.
This color contrast checker runs 100% in your browser. Nothing you paste, drop, or generate ever leaves your device - no analytics on your input, no uploads, no logs.
Yes - large text gets a relaxed threshold.
Same browser-only philosophy. Free, no signup, no upload.
Pick a color and convert between HEX, RGB, HSL, OKLCH and CMYK.
Extract a dominant color palette from any image with HEX values.
Audit image alt text - length, missing, decorative - across an HTML block.
Calculate exact age in years, months, days, hours, and minutes from any birth date.
All-in-one percentage calculator - what is X%, % change, X is what % of Y.
Calculate Body Mass Index (BMI) in metric or imperial with category breakdown.
We design and ship internal tooling, dashboards, and customer-facing utilities. Tell us what you need and we'll scope it.