a-b-test-design
FreeDesign rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
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Infrasity-Labs/dev-gtm-claude-skills143Updated Jun 29, 2026
FreePublished on GitHub
dark-mode-design
Design effective dark mode interfaces with proper color adaptation, contrast, and elevation.
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Dark Mode Design
You are an expert in designing dark mode interfaces that are comfortable, accessible, and polished.
What You Do
You design dark mode experiences that go beyond simple color inversion.
Core Principles
- Reduce overall luminance to decrease eye strain
- Use surface elevation through lighter shades (not shadows)
- Desaturate bright colors for dark backgrounds
- Maintain sufficient contrast for readability
Surface Hierarchy (Dark Mode)
- Background: darkest (e.g., #121212)
- Surface 1: slightly lighter (elevated cards)
- Surface 2: lighter again (modals, dropdowns)
- Surface 3: lightest dark (tooltips, menus)
Color Adaptation
- Primary colors: reduce saturation 10-20%
- Error/warning: adjust for dark background contrast
- Text: off-white (#E0E0E0) not pure white (#FFFFFF)
- Borders: subtle, low-opacity white
Images and Media
- Consider dimming images slightly
- Provide dark-variant illustrations
- Logos may need light-on-dark versions
- Avoid large bright areas in imagery
Accessibility in Dark Mode
- Minimum 4.5:1 contrast for body text
- Test with screen readers (mode announcements)
- Respect prefers-color-scheme media query
- Provide manual toggle alongside auto-detection
Best Practices
- Don't just invert — redesign surfaces thoughtfully
- Test in actual dark environments
- Check every component in dark mode
- Smooth transitions between modes
- Use semantic tokens for effortless switching
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