• Main Page
• What Colorblindness Is
• Frustrations / Dangers
• How Colorblindness Works
• Clinical Information
• Ishihara Test for Color Blindness
• Another Test for Color 
• Shareware software for the color blind
• About the Color Charts
• Basic Black/Grays
• Basic Blues
• Basic Browns  
• Basic Greens
• Basic Oranges
• Basic Purples
• Basic Reds
• Basic Off-Whites
• Basic Yellows 
• Universal Color Chart
• Links to other Sites about Color Deficiency
• Colorblind Friendly Websites

The Purpose of This Site

This site is about color blindness or, more correctly, color deficiency.

Briefly, it describes the condition, causes, and effects. The primary purpose, however, is to furnish a set of color charts to aid the color blind in working with computer colors, most especially on the internet and in web sites. There is also some really nice software (shareware/freeware) here for checking colors onscreen on your computer – great for anyone, but especially for the colorblind!

About the Color Charts

There is one column named “Co#” in each color chart. If you need to find colors that will work satisfactorily together in a single web page, you can use any colors with the same Co# (Coordinating Number) and feel safe with them. Not every chart nor every color has a Co#. Depending on the colors, some colors may appear in more than one color chart grouping.