Colour as the sole signal
- Forbidden
- Red border alone to indicate an invalid field
- Instead
- Colour plus text plus (where useful) an icon. Applies to status badges, chart series, diff views, and validation.
What this rule looks like
- Kind
- Rule
- Section
- Things to avoid
- Group
- Colour and contrast
- Bucket
- judgment
- Severity
- note
- Since
- v0.1.0