Accessibility
The picture should make the numbers easier to understand, and the numbers should still be available without the picture.
Built-in alternatives
Calculators have labeled controls, visible focus, keyboard operation, text summaries and a View numbers table. Chart lines use text labels and different patterns as well as colors. Sliders have a paired number field.
The page provides a skip link and normal navigation links. Results are announced politely after changes settle. Reduced-motion preferences are respected. Without JavaScript, the original example and explanations remain visible and the calculator controls are disabled.
Verification status
The project targets relevant WCAG 2.2 AA criteria, but does not claim certification or complete conformance. Automated accessibility checks and responsive browser checks have been used to evaluate the site.
A manual screen-reader review has not been completed. Automated scanning does not establish that every assistive-technology combination will work.
Feedback availability
The site currently has no public contact channel for accessibility feedback or individual assistance. Text summaries and number tables provide alternatives to interpreting the charts.