$99

Flabbergasted, A bold dark-mode SaaS template built with Astro and Tailwind CSS for modern AI products.

Flabbergasted is a sleek dark SaaS template designed for fast-moving startups and AI products, combining bold aesthetics with high performance.

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All Pages

Static Pages

  • Landing page
  • About
  • Contact
  • Sign in
  • Sign up
  • Error 404

Content Collections

  • Blog
  • Customers
  • Integrations
  • Help Center
  • Changelog
  • Team
  • Legal pages

Good to Know — Each theme includes a main index page and individual detail pages. You’ll also get a preconfigured .pages.yaml file that automatically connects your content collections. That’s all you need to start using PagesCMS — no extra setup required, no bloated code.

Features

  • Blog Tags
  • Reusable components
  • Optional CMS via PagesCMS
  • Search powered with Fuse JS
  • Content collections
  • Seo Optimized
  • Ongoing updates
  • Style guide
  • Astro RSS
  • Astro SEO
  • Astro Sitemap
  • Tailwind CSS Forms
  • Tailwind Typography

Specifications

  • Astro v5
  • Tailwind v4
  • Released on 02.23
  • Updated on 08.25
  • Performance 99
  • Accessibility 100
  • Best Practices 100
  • SEO 100

File Structure

  • public
  • src
    • components
    • layouts
    • pages
    • content
      • folders
      • config.ts
    • data
    • scripts
    • styles
      • global.css
    • endv.d.ts
  • .pages.yml
  • astro.config.mjs
  • package.json
  • README.md
  • ts.config.json
Documentation License Support Faq

Flabbergasted — Dark SaaS theme for Astro & Tailwind CSS

Flabbergasted is a bold dark-mode SaaS template designed for AI products, startups, and fast-moving digital platforms. With sharp layouts, sleek gradients, and a confident design system, it’s made for teams that want to launch quickly while standing out from generic SaaS designs. Powered by Astro and Tailwind CSS, it delivers performance and maintainability without compromise.

Specifications

  • Built with Astro v5 + Tailwind CSS v4
  • High Lighthouse scores across Performance, Accessibility, Best Practices, and SEO
  • Fully responsive and optimized for modern browsers

Features

  • Multiple landing, about, and contact page templates
  • Content collections for blogs, changelogs, integrations, and help centers
  • Reusable components (buttons, wrappers, typography, etc.) styled with the OKLCH color system
  • Built-in search powered by Fuse.js for quick in-site discovery
  • Blog pagination for structured article browsing
  • SEO-ready with Astro SEO, Sitemap, and RSS integrations
  • Clean file structure with a style guide and ongoing updates

PagesCMS Ready

Flabbergasted includes a preconfigured .pages.yaml file that connects your content collections directly to PagesCMS.
Once you link your repo in the PagesCMS dashboard, integration happens automatically—no edits to the template code are needed. This keeps the template a pure Astro + Tailwind CSS setup while offering optional CMS-powered content management.

Modern Color System

The theme uses OKLCH color values for consistent cross-browser rendering and future-proof color management in Tailwind CSS v4. Gradients and dark UI elements are designed to highlight SaaS and AI products with clarity and impact.

Why Choose Flabbergasted?

  • Dark-mode aesthetic built for SaaS and AI-driven platforms
  • Astro’s static-first architecture for speed and scalability
  • Tailwind utilities for rapid customization and clean design patterns
  • Ready-to-use content collections for customers, integrations, and updates
  • Flexible enough for product launches, software platforms, or AI-focused startups
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Customers & supporters

Feedback from developers, founders, and fans who use Lexington Themes in their projects.

Read all reviews
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RivalHunt

rivalhunt.co

Always start with a template. We can highly recommend @lexingtonthemes made by @Mike_Andreuzza. This will literally save you days of work. There are both paid and free options and all of them are just amazing.

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Rohit

SDE Intern @MercedesBenzInd

Just checked it out and these themes & UI kits are really value for money!

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Sheena

Developer

Using Lexington Themes @lexingtonthemes is such a game changer! Now THIS is The Modern Way to build websites!