Dark Mode Token Checker: Ship Accessible Light and Dark Themes

Dark mode is not an inverted palette.

It is a second system of semantic decisions: surfaces, text, borders, accents, success, warning, and error states all need to remain readable.

That is why token roles matter more than one-off color picks.

What to check

The Dark Mode Token Checker tests:

• light text on light surfaces
• dark text on dark surfaces
• accent usability
• semantic state contrast
• role duplication
• CSS variable export readiness

The output gives you a contrast matrix, recommendations, and copyable CSS variables.

Build the system

Use the Brand Color Accessibility Checker for broad palette checks first.

Then move safe roles into the Design Token Starter Generator.