01What we aim for
We aim to meet WCAG 2.1 level AA throughout. The contrast ratios of the palette were measured rather than assumed, and the measured figures are recorded in a comment at the top of the stylesheet.
Body text on the page background measures 17.30:1 and secondary text 7.75:1, both above the 4.5:1 threshold. The slate-blue accent used for the arch zone measures 3.29:1 against the background and is therefore used only for graphics and borders; where an arch label needs to be read as text, a lighter variant at 7.28:1 is used instead.