Dynamic Color Palette with Time of Day

Create palettes that shift smoothly from morning to night. Great for ambient UI themes and dashboards.

Configure Periods

morning

Primary
Accent

afternoon

Primary
Accent

evening

Primary
Accent

night

Primary
Accent

Export

Includes light/dark defaults. Extend with a scheduler if needed.
/* Time-based palette */
:root{--bg:#F8FAFC;--text:#0F172A;--primary:#0EA5E9;--accent:#22C55E}
@media(prefers-color-scheme:dark){:root{--bg:#0B1220;--text:#E5E7EB;--primary:#60A5FA;--accent:#F472B6}}

How It Works

Define core brand colors once and let the interface adapt automatically throughout the day. The tool models four time periods—morning, afternoon, evening, and night—and allows you to specify background, text, primary, and accent colors for each. It then generates semantic CSS variables (for example --bg, --text, --primary, --accent) and an optional lightweight script snippet to switch palettes on a schedule or using the system clock.

Designers and developers can preview transitions, test accessibility, and refine tonal shifts to maintainreadability, contrast, and brand continuity. Use cases include ambient dashboards, productivity apps, editorial sites, and any UI that benefits from context-aware themes and circadian-friendly color schemes.

Key benefits

  • Consistency: Centralize color tokens and avoid drifting palettes.
  • Accessibility: Validate contrast in each time period and prevent unreadable states.
  • Performance: Export minimal CSS variables without heavy runtime dependencies.
  • Internationalization: Tie schedules to user locale/timezone for global audiences.

Implementation ideas

  • Schedule updates with setInterval or a service worker to avoid flashes.
  • Persist the last-applied theme in localStorage to respect user overrides.
  • Combine with prefers-color-scheme to coordinate light/dark variants.

SEO keywords

dynamic ui theme, time based color theme, day night mode, css variables theme, adaptive design system, color tokens

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