The Contrast Guide
The Contrast Guide shows how contrast is achieved; it is a comprehensive resource with examples and an LRV Ready Reckoner. It explains many of the basic terms used by professionals for contrast specification in the building and product design industries.
A section has tables for fast assessments of contrast on site of 30 points of LRV difference. There is a glossary and illustrations of typical critical elements of products and environments that must be accessible for people with low vision.

