Color & a11y
WCAG color contrast
Check WCAG 2.x contrast ratios for text and UI colors in sRGB hex.
WCAG defines minimum contrast between text and background so users with low vision or color deficiency can read content. Enter foreground and background hex values to see the contrast ratio and whether common AA/AAA thresholds pass for normal vs large text.
Similar tools
Quick links to related utilities—same workflow, different input or output.
FAQs
What thresholds are tested?›
Normal text typically needs 4.5:1 for AA and 7:1 for AAA; large text uses 3:1 / 4.5:1. Graphical components often target 3:1 for non-text contrast.
Does this cover non-sRGB displays?›
Calculations assume sRGB hex inputs; wide-gamut monitors may perceptually differ slightly.
Is passing contrast enough for accessibility?›
Contrast is one requirement—also test focus states, semantics, and keyboard navigation.
General
Do these tools send my data to Exemplar’s servers?›
By default, conversion and formatting run entirely in your browser. Nothing is uploaded to Exemplar for normal paste-and-transform workflows. Tools that deliberately open an external service (for example, a third-party speed test) are called out on the page.
Do I need an account or install anything?›
No account is required. Everything runs in the browser—there is nothing to install for these utilities. They complement the Exemplar platform but work standalone.
Are these utilities open-source or the same as other sites?›
These pages are built for Exemplar’s audience (developers working with APIs, config, and ops data). Behavior may differ slightly from other online tools; always verify critical output in your own environment.
Are there size or performance limits?›
Very large inputs can slow down or crash the tab—especially for images, huge JSON, or multi‑MB HAR files. For production-scale data, prefer local CLI tools, streaming parsers, or your own pipelines.
Can I use output in production?›
Yes, when you have validated it. Parsers and formatters here aim to be helpful for everyday tasks but are not a substitute for tests, schema validation, or security review where it matters.
Where can I read more about privacy?›
See our Privacy policy at /privacy for how exemplar.dev handles site analytics and general data practices.