Smart Theme Generator
Select your brand's primary color, and we will automatically generate a perfectly harmonious, accessible palette for both Dark and Light UI modes.
Build faster with smart colors.
This mockup updates instantly based on your brand color. Notice how the background, cards, and text automatically tint to match your primary hue perfectly.
How the Smart Theme Generator Works
Most people don't struggle to pick one nice color. They struggle with everything that comes after it — what shade should the background be, how muted should the secondary text look, does the button text need to be white or black. You pick a blue you like, and then you're stuck guessing at eight more colors just to make a single screen look finished. That's really the problem this tool is built to fix.
Give it one color — your brand color, or honestly any color you're drawn to — and it works out a full, balanced palette around it. Backgrounds, card surfaces, borders, text, muted text, all built to actually sit well together instead of being picked one at a time by feel.
Start with a color
Tap one of the quick swatches if you just want to see how it works, or open the custom color picker and choose your own. You can also type a hex code straight into the field if you already know exactly what you want.
Let it build the palette
The moment you pick a color, the tool works out the rest on its own — background, card surface, border, main text, and muted text — all pulled from the same color family so nothing looks random or out of place.
Check it in the live mockup
On the right, you'll see a real interface — a header, a dashboard card layout, and buttons — using your generated colors. This is the part that actually matters. A palette can look fine as a row of swatches and still feel wrong once it's on an actual screen, so always judge it here.
Switch between dark and light
Click "Dark Theme" or "Light Theme" above the palette. The generator recalculates everything for that mode instead of just inverting colors, which is why the light version won't look like a washed out version of the dark one.
Nudge any color by hand
Not happy with one specific shade? Click its little color circle in the palette list and adjust it directly. The mockup updates instantly, so you'll know right away if the change actually helps.
Copy the hex codes
Once you're happy with it, click any hex code in the list to copy it. Drop it straight into your CSS variables, your Tailwind config, or a Figma file — wherever you're actually building this thing.
A Few Things Worth Knowing Before You Build a Palette
Don't judge a color alone
A shade of blue can look perfect by itself and completely wrong once it's sitting next to your actual text and background. Always check it inside the mockup, not just as a flat swatch.
Muted text isn't a leftover color
It's tempting to treat secondary text as an afterthought, but it's what your users read the most — descriptions, captions, helper text. Give it as much attention as your headings.
Dark mode isn't just "flip it"
A good dark theme isn't your light theme with the colors reversed. Contrast, glare, and how long someone stares at a screen all behave differently at night, which is why this tool builds each mode from scratch.
One brand color is usually enough
It's easy to want three or four "accent" colors. Most strong interfaces lean on one primary color and let everything else stay quiet — that's what actually makes the primary color stand out.
Why This Actually Matters
Color is one of the first things a visitor notices, even before they've read a single word — and it's also one of the easiest things to get slightly wrong without realizing it. A palette that's just a little off doesn't usually make someone hit the back button. It just makes the page feel a bit less trustworthy, a bit less finished, without them being able to say exactly why. A palette that's properly balanced does the opposite — it quietly makes everything else you've built look more deliberate than it might actually be.
Common Questions
Is this tool free to use?
Yes, completely. There's no sign-up and no limit on how many palettes you generate.
Does it check color contrast for accessibility?
The palette is generated with readable contrast in mind for both text and buttons, but if your project needs strict WCAG compliance, it's still worth running the final colors through a dedicated contrast checker before shipping.
Can I use these colors in CSS, Tailwind, or Figma?
Yes. The output is plain hex codes, so you can paste them into CSS variables, a Tailwind config file, Figma styles, or basically any design or code tool you're already using.
Does the tool save or store my color choices anywhere?
No. Everything runs locally in your browser while you're using it, and nothing is uploaded or saved once you close the page.
Will this work well on mobile?
Yes, the layout adjusts for smaller screens, so you can build and preview a palette from your phone just as easily as from a desktop.