Themez
The Problem
Choosing a color palette is one of the hardest parts of design. You can stare at swatches all day, but until you see them applied to a real interface, you never know if they actually work. Most color tools show colors in isolation, which tells you nothing about how they'll look in context.
What I Built
Themez is a real-time color palette visualizer that solves this problem. It comes with preloaded palettes that you can apply instantly to a full UI demo - so you see exactly how a palette looks with buttons, cards, typography, and spacing before committing to it.
Technical Implementation
Built with Next.js and TailwindCSS, the app uses CSS custom properties to swap color schemes dynamically. When you select a palette, it updates the CSS variables in real-time, and the entire UI demo re-renders with the new colors. No page reloads, no flickering - just instant feedback.
Palette Library
The palette library includes carefully curated combinations:
- Warm neutrals
- Cool blues
- Vibrant accents
- Accessibility-tested pairs
Each palette includes primary, secondary, accent, and neutral colors with proper contrast ratios.
UI Demo
The UI demo section shows these colors applied to common components:
- Cards and containers
- Buttons and interactive elements
- Form inputs and labels
- Navigation and headers
Why I Built This
I built this because I kept second-guessing color choices in my own projects. Now I can quickly test 5-6 palettes against a realistic interface and make confident decisions in minutes instead of hours.
Key Takeaway
Design tools should show you outcomes, not just inputs. By rendering palettes against a real UI, Themez eliminates the guesswork from color selection and makes the decision visual and immediate.