Wikipedia:Colour contrast

If you have default settings on Wikipedia, and are reading this page on a screen, then you probably can't read the following:

This is a secret message

because it has blue text on a blue background.

Text that you probably can read, such as red on green, may present a similar problem to people who have colour-blindness.

Text with low contrast, such as light grey on dark grey, presents a similar problem to people with other eyesight-related conditions.

The more severe their condition, the higher the contrast has to be for them to be able to read it.

The non-discrimination policy is "approved by the Wikimedia Foundation Board of Trustees to apply to all Wikimedia projects. It may not be circumvented, eroded, or ignored by local policies."

It says: "The Wikimedia Foundation prohibits discrimination against current or prospective users... on the basis of... disability".

To avoid these problems, you should ensure that text meets the guidelines set out in WP:COLOUR.