Discover beautiful color combinations your whole audience can appreciate and follow Web Content Accessibility Guidelines (WCAG) with ease.
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The color pairings follow WCAG 2.1 AA based on a contrast ratio of 4.5:1. The pairings have sufficient contrast for use with normal text, large text and graphics.

Graphics with scientific data become clearer when the colours are chosen carefully. It is convenient to have good default schemes ready for each type of data, with colours that are:

distinct for all people, including colour-blind readers;
distinct from black and white;
distinct on screen and paper;
matching well together.

This site shows such schemes, developed with the help of mathematical descriptions of colour differences and the two main types of colour-blind vision.

Web tool for guidance in choosing choropleth map color schemes, based on the research of Dr. Cynthia Brewer. Built and maintained by Axis Maps.