Are these online tools completely free to use?

Yes, all tools on Maptheory are 100% free to use. There are no hidden costs, no premium tiers, no watermarks, and no usage limits. We believe everyone should have access to high-quality productivity tools without barriers.

Do I need to create an account to use the tools?

No account or signup is required. Simply open any tool and start using it immediately. Your work is processed entirely in your browser, so there's no need to authenticate or store your data on our servers.

Is my data private and secure when using these tools?

Absolutely. All our tools process data entirely in your browser using client-side JavaScript. Your files, passwords, and other sensitive information never leave your device. This is true for all tools including the password generator, image compressor, and QR code generator.

Do the tools work offline?

Yes! Since our tools run entirely in your browser, they can work offline once the page is loaded. You can even install Maptheory as a Progressive Web App (PWA) for offline access. This is especially useful for the password generator, JSON formatter, and other text-processing tools.

What types of tools are available on Maptheory?

We offer a diverse collection of productivity tools across several categories: Developer Tools (QR code generator, JSON formatter, Base64 encoder, timestamp converter), Text & Content Tools (Markdown editor, Lorem ipsum generator, password generator), Image Tools (image compressor, color palette generator), SEO & Marketing Tools (meta tag generator), and Data Tools (correlation analysis, hackathon finder).

Can I use these tools on mobile devices?

Yes, all our tools are fully responsive and work great on mobile devices, tablets, and desktops. The interfaces adapt to your screen size, and touch interactions are fully supported. You can even install the Maptheory app on your home screen for quick access.

How are the tools organized by category?

Tools are organized into intuitive categories: Developer Tools for coding and programming utilities, Text & Content for writing and text manipulation, Image Tools for visual content, SEO & Marketing for search optimization, Data & Analytics for data exploration, and Other Tools for miscellaneous utilities. You can filter and search to find exactly what you need.

Can I suggest a new tool to be added?

We love hearing from our users! If you have a tool suggestion, you can email us at batikanor@gmail.com with your idea. We regularly add new tools based on user feedback and common developer/designer needs.

What are color harmony rules?

Color harmony rules are mathematical relationships between colors on the color wheel. Common types include complementary (opposite colors), analogous (adjacent colors), triadic (three evenly spaced), and split-complementary.

How do I extract colors from an image?

Upload any image and our tool uses color quantization algorithms to identify the dominant colors. You can then edit and export the resulting palette.

What is WCAG contrast checking?

WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios between text and background colors for readability. Our tool checks if your color pairs meet AA or AAA accessibility standards.

Can I save my palettes?

Yes, click the heart icon to save palettes to your favorites. They are stored locally in your browser and available whenever you return.

What export formats are available?

Export as CSS custom properties, SCSS variables, Tailwind CSS configuration, JSON data, or as a PNG image showing all colors with their values.

Color Palette Generator

Generate beautiful color palettes using random generation, color harmony rules, or extract dominant colors from your images. Check accessibility with WCAG contrast checker and color blindness simulation. Press Space for random palettes.

Runs in your browser

How It Works

Choose Mode

Select Random, Color Harmony, or From Image to extract colors from photos.

Upload or Configure

Drop an image to extract colors, pick a harmony type, or press Space for random palettes.

Adjust

Fine-tune extraction settings, saturation, lightness, and temperature.

Check Accessibility

Verify WCAG contrast compliance and test with color blindness simulation.

Export

Export to CSS, SCSS, Tailwind, JSON, or share with a URL.

Features

WCAG Accessibility Checker

Check contrast ratios between all color pairs. See AA and AAA compliance levels with suggestions for accessible alternatives.

Color Blindness Simulation

See how your palette appears to people with Protanopia, Deuteranopia, Tritanopia, and Achromatopsia.

Extract from Images

Upload any image to extract its dominant colors using advanced color quantization. Perfect for creating palettes from photos.

Color Harmony Rules

Generate palettes using complementary, analogous, triadic, split-complementary, square, and monochromatic harmonies.

Multiple Export Formats

Export to CSS variables, SCSS, Tailwind CSS config, JSON, PNG image, or share with a URL.

Save Favorites

Save palettes to your favorites, rename, and manage them. Import and export your collection.

Interactive Color Wheel

Click on the color wheel to select your base color and see harmony relationships visually.

100% Private

All processing happens in your browser. Nothing is stored on servers.

Color Accessibility Tips

WCAG 2.1 Guidelines: Normal text needs 4.5:1 contrast (AA) or 7:1 (AAA). Large text (18pt+) needs 3:1 (AA) or 4.5:1 (AAA).
Don't Rely on Color Alone: Use patterns, icons, or labels alongside colors to convey information.
Test for Color Blindness: About 8% of men and 0.5% of women have some form of color vision deficiency.
60-30-10 Rule: Use your dominant color 60% of the time, secondary color 30%, and accent color 10% for balanced designs.

Frequently Asked Questions

Yes, this color palette generator is completely free to use. There are no limits on how many palettes you can create, no watermarks, and no signup required. All features including color harmony generation, image extraction, accessibility checking, and export options are available at no cost.

We support six color harmony types: Complementary (opposite colors), Analogous (adjacent colors), Triadic (three evenly spaced colors), Split-Complementary (base + two adjacent to complement), Square (four evenly spaced colors), and Monochromatic (variations of a single hue). Each creates aesthetically pleasing combinations based on color theory.

Our image color extraction uses the median cut algorithm, a proven color quantization technique. Upload any image (JPEG, PNG, WebP), and the tool analyzes pixel colors to identify dominant hues. You can adjust extraction settings including color count (2-10), quality level, and filters for light/dark colors.

You can export palettes as CSS custom properties (with HEX, RGB, and HSL variants), SCSS variables with a color map, Tailwind CSS configuration, JSON data, PNG image with swatches, or a shareable URL. Each format is optimized for its intended use in web development workflows.

The accessibility checker evaluates contrast ratios between all color pairs in your palette according to WCAG 2.1 guidelines. It shows AAA (7:1), AA (4.5:1), and AA-Large (3:1) compliance levels. For failing pairs, it suggests adjusted colors that meet accessibility requirements.

The color blindness simulator shows how your palette appears to people with different types of color vision deficiency: Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), and Achromatopsia (total color blindness). This helps ensure your palette is distinguishable for all users.

Yes, all processing happens entirely in your browser. Images you upload for color extraction are never sent to our servers. Your palettes and favorites are stored locally in your browser's localStorage. No color data, images, or personal information is ever transmitted or stored externally.

Yes, use the Favorites feature to save palettes with custom names. You can browse saved palettes, search by name, rename, delete, and even import/export your entire collection as JSON for backup. Up to 50 palettes can be saved locally in your browser.

What is a Color Palette?

A color palette is a curated selection of colors that work harmoniously together. Designers use color palettes to ensure visual consistency across websites, apps, branding materials, and any creative project.

A well-chosen palette typically includes 4-6 colors: a dominant color, secondary colors, and accent colors. These colors establish mood, guide user attention, and create visual hierarchy in your designs. Ensuring accessibility through proper contrast ratios makes your designs usable by everyone, including people with visual impairments.