Material Design Color Generator: Build Accessible, On-Brand Palettes in Seconds
Learn how the Material Design Color Generator creates WCAG-compliant palettes with 10-shade tonal ramps, theme tokens, and dark mode previews — perfect for Android apps and web design systems.
Table of Contents
Picking colors for an app or website is deceptively hard. Choose a primary color that looks great on a mockup and it can fail spectacularly in production — washed out on a light background, illegible as button text, or jarring in dark mode. Most of us have been there: staring at a color wheel, tweaking saturation by hand, and hoping the result passes a contrast check.
That is exactly the problem the Material Design Color Generator solves. Drop in a seed color and it produces a complete, Google-approved Material Design palette: ten tonal shades, a full theme color system, live light and dark theme previews, and per-shade WCAG accessibility grades. No design system expertise required — the tool does the color science for you.
In this guide, we will walk through what the tool offers, how to use it, and how to apply its output to real Android apps, web projects, and design systems.
Why Use Material Design Color Generator?
- Guideline-compliant palettes instantly. The tool generates tonal palettes exactly the way Google's Material Design guidelines specify, so your colors ship with the official design language baked in — no manual reference charts needed.
- Accessibility is built in, not bolted on. Every shade is graded AAA, AA, or FAIL for WCAG contrast, so you can pick text and surface colors with confidence instead of guessing and checking later.
- A complete theme system, not just a color ramp. You get primary, secondary, background, surface, and error colors plus their on-colors (onPrimary, onBackground, onSurface, onError) — the full token set real apps need.
- Light and dark themes from day one. Live UI mockups show your palette on buttons, cards, and text in both themes, catching contrast problems before your users do.
- Developer-friendly output. Copy any color as HEX, RGB, or HSL, or download the whole palette as a text file of CSS variables (--md-primary, --md-secondary) ready to drop into your codebase.
- Zero learning curve. Nineteen preset base colors and an HSL slider mean the first useful palette is seconds away, even for total beginners.
Key Features
| Feature | What it does |
|---|---|
| 19 preset base colors | One-click start from Red, Pink, Purple, Deep Purple, Indigo, Blue, Light Blue, Cyan, Teal, Green, Light Green, Lime, Yellow, Amber, Orange, Deep Orange, Brown, Grey, or Blue Grey |
| 10-shade tonal palette | Shades 50–900 generated from your base color using HSL lightness offsets |
| Custom seed color picker | Fine-tune Hue, Saturation, and Lightness with dedicated sliders |
| WCAG contrast grading | Every shade rated AAA, AA, or FAIL for accessible text and UI use |
| Theme color system | Primary, secondary, background, surface, error + on-colors for each |
| Light & dark theme previews | Live UI mockups with buttons, cards, and text in both themes |
| Per-shade contrast ratios | Exact contrast ratios against white and black backgrounds |
| Copy & export | Copy individual values in HEX, RGB, or HSL; download the palette as CSS variables |
A few details worth calling out:
- Per-shade contrast ratios let you verify, at a glance, whether #6750A4-style tones hold up as text on white or as accents on black — no separate contrast checker tab required.
- The download export produces a plain text file of CSS variables (--md-primary, --md-on-primary, and friends) that you can paste straight into your stylesheet or theme file.
- Live preview cards render real UI components — buttons, cards, text blocks — so you evaluate colors in context, not as abstract swatches.
How to Use
- Choose a base color. Pick one of the 19 preset Material Design colors, or open the custom picker and start from scratch.
- Fine-tune with the sliders. Adjust Hue, Saturation, and Lightness until the seed color matches your brand.
- Review the tonal palette. The tool generates all ten shades (50 through 900) and grades each one for WCAG contrast — scan for AAA and AA grades where you need them.
- Check the theme previews. Toggle between the light theme and dark theme mockups to confirm your primary, surface, and on-colors work in both.
- Copy or export. Copy individual values in your preferred format (HEX, RGB, HSL) or download the full palette as CSS variables for your codebase.
Understanding Material Design Color Systems
Material Design's color system is built on tonal palettes: each color family contains ten shades numbered 50 (lightest) through 900 (darkest), with 500 as the typical "primary" anchor. A palette for Indigo, for example, runs from a near-white #E8EAF6 at 50 to a deep #1A237E at 900. The Material Design Color Generator produces these ramps automatically using HSL lightness offsets, so every shade in the family stays harmonized — no muddy outliers.
Accessibility is where Material's system shines. The Web Content Accessibility Guidelines (WCAG) define contrast ratios for readable text: AAA requires at least 7:1 for normal text, AA requires 4.5:1 (or 3:1 for large text), and anything below that FAILs for body text use. The tool grades every shade against these thresholds, so when you pair --md-on-primary with --md-primary, you know the result is legible before it ever reaches a screen.
Light and dark themes are two sides of the same palette. A light theme typically uses light surface colors with dark on-colors, while a dark theme flips the relationship — dark surfaces with light text. Because the tool previews both, you can confirm that a vibrant primary like #FF6D00 stays usable as an accent on #121212-style surfaces, not just on white.
On-colors are the unsung heroes of accessible theming. Every role color (primary, background, surface, error) has a matching on-color that is guaranteed to contrast with it. Rather than hand-picking text colors and hoping, you assign onPrimary to text sitting on primary and let the contrast math do the work.
CSS variables make all of this portable. The exported file looks something like:
--md-primary: #6750a4; --md-secondary: #625b71; --md-background: #fef7ff; --md-surface: #fef7ff; --md-error: #b3261e; --md-on-primary: #ffffff; --md-on-background: #1d1b20; --md-on-surface: #1d1b20; --md-on-error: #ffffff;
Drop those tokens into your theme file once, reference them everywhere, and your entire UI inherits a consistent, accessible color story.
Practical Use Cases
Android app theming
Material Design 3 apps define their look through theme colors. Generate a palette from your brand color, map the 500 shade to primary, the appropriate on-colors to text, and you have a production-ready theme — including dynamic color support, since Material 3 lets users' wallpapers drive color while your tokens keep everything accessible.
Web design system
For a SaaS dashboard or marketing site, the exported CSS variables become the foundation of your design tokens. Define --md-primary, --md-surface, and --md-error once in :root, use them across components, and every future page inherits the same consistent, WCAG-graded color language.
Dark mode setup
Dark mode fails most often on contrast. Use the tool to preview your palette as a dark theme, choose surface shades from the 700–900 end of the ramp, and verify that on-colors flip to light tones. The AAA/AA grades tell you exactly which combinations are safe for body text.
Prototypes and mockups
Before a single line of code, generate a palette and use the live preview cards to sanity-check buttons, cards, and text in both themes. Sharing a screenshot of an accessible, on-brand mockup with stakeholders beats debating hex codes in a spreadsheet.
Best Practices
- Anchor on the 500 shade for your primary color, then pull lighter (50–200) and darker (700–900) shades for surfaces and emphasis.
- Always pair a color with its on-color — never hand-pick text colors when onPrimary and onSurface already guarantee contrast.
- Keep secondary colors harmonious with your primary by choosing adjacent hues or muted tones rather than clashing complements.
- Design for both themes up front. A palette that passes in light mode can fail in dark mode; check the previews before committing.
- Use the export as your single source of truth. Centralize the CSS variables in one file so engineers and designers stay in sync.
- Verify with real content. Contrast grades are necessary, but test actual UI with real text sizes and weights — large headings have looser requirements than body copy.
Try the Material Design Color Generator
Whether you are theming an Android app, standing up a web design system, or just need an accessible palette for your next prototype, the Material Design Color Generator turns minutes of fiddling into seconds of work. Pick a seed color, review the tonal ramp and contrast grades, and export clean CSS variables — all for free.
Related Tools You Might Like:
Happy designing!