Accessibility

Effective 8 October 2026

What the Page Aims For

Psychrometry is built to meet the Web Content Accessibility Guidelines 2.2 at level AA. Every control has a written label, every control is reachable and usable from the keyboard alone, and the focus is always drawn as a carmine outline. The reading and every property in it are text, so a screen reader reads them in order: the dry-bulb, the relative humidity, the dew point, then the full ledger with each equation named.

The Chart

The chart is a drawing, described to assistive technology by a text label that states the pressure it is drawn for, the point and any process. Every number the chart shows for your air is also in the reading beside it, at full text size.

A tap or a click on the chart moves the point. The chart itself is not a keyboard control; the form under it sets every point the chart can, from the keyboard, and the chart follows.

Your point and its constructions are carmine and are also dashed and labelled with their values, and the chart's own line families differ by dash pattern and by their printed labels, so colour is never the only signal.

How It Is Measured

Before each release the live page is checked by automated tools: axe-core rules for labels, contrast, landmarks and focus, run at a phone width and a desktop width; a mobile check of tap-target size (44 by 44 CSS pixels or larger), text size and sideways scrolling at three device widths; and a check for console errors at 375, 768 and 1440 pixels. Text contrast is at least 4.5 to 1 against the page, and body text reaches 14 to 1. Automated checks catch a share of problems, not all of them, so a report from a person who uses the page is worth more than any of them.

Motion

Nothing on the page moves by itself. The chart changes only when you move the point, and it changes at once.

Known Limits

At phone width the chart's own labels are 10 pixels high, because an engineering chart that labels every line in place is dense. You can zoom the page with the usual pinch or keyboard zoom, and every value for your air is in the reading at full size. The page is in English only.

Tell Us

If any part of the page is hard to use with your setup, write to support@painted.app with what you were trying to do and what got in the way. A person reads every message.