Cartography and colour access

Territorial authority palette explorer

Pick a colour ramp, set the brightness, and see a New Zealand territorial authority choropleth recolour in real time. The colour vision check shows the same map as it reads for viewers with deuteranopia, protanopia, or tritanopia, so you can confirm a map still works before it goes to the public.

Approximate land area Normal colour vision

66 territorial authorities (2013 boundaries) Simple equirectangular fit, not survey grade

Palette

Brightness applied before the colour check

100%

Colour vision check

Around 1 in 12 men and 1 in 200 women have some colour vision deficiency. A map that relies on hue alone can lose meaning for them. Ramps here run light to dark, so the order holds up even when hue does not.