Common queries and details about using this utility.
A color palette generator is an interactive design tool that creates aesthetically cohesive sets of colors for web and mobile applications, brand identities, and graphic illustrations. Our generator uses color wheel mathematics and color theory algorithms to generate harmonious combinations based on precise geometric angles.
Click the lock icon (🔒) on any color swatch card to freeze that color in place. When you press Spacebar or click 'Generate', locked colors remain unchanged while unlocked swatches are randomized or harmonized around your fixed selections.
Yes! Switch to 'Extract from Image' mode, drag and drop any image file (PNG, JPG, WebP, SVG), or click 'Sample Artwork'. The HTML5 Canvas pixel sampler analyzes the image and extracts the dominant harmonious colors with automatic luminance separation.
We support 7 core color theory harmony rules: Analogous (±30°), Monochromatic (varying lightness/saturation), Complementary (180° opposite), Triadic (120° equidistant), Split-Complementary (150°/210°), Tetradic (60°/180°/240°), and Square (90°/180°/270°).
The Color Blindness Simulator uses scientifically validated transformation matrices (Brettel/Viénot models) to simulate how your palette appears to people with Protanopia (red-blindness), Deuteranopia (green-blindness), Tritanopia (blue-blindness), and Achromatopsia (monochrome vision).
You can copy individual HEX, RGB, or HSL values, copy full CSS Custom Properties (:root { --palette-1: ...; }), copy Tailwind CSS colors config, copy raw JSON HEX array, download an SVG vector palette file (.svg), export a high-res PNG palette artwork, download an RFC 4180 CSV specifications matrix, or download a full JSON audit report.
Press Alt+S or click 'API Code' in the hero header to open the Developer API Studio modal. You can inspect and copy ready-to-use color constants across 8 programming languages (CSS Variables, Tailwind config, SCSS Map, TypeScript, Python, Swift/SwiftUI, Android Kotlin Compose, and Go) or download standalone integration source files with 1 click.
Click 'Preview UI' in the workspace toolbar to toggle between 3 realistic device mockups: a SaaS Analytics Dashboard Card, a Mobile Social Feed App Card, and a Modern Landing Hero Banner. Each template dynamically styles backgrounds, primary buttons, secondary outlines, status badges, and typography using your palette swatches while checking contrast readability.
Yes! On supported Chromium browsers (Chrome, Edge, Opera), click the EyeDropper icon (👁️) next to the Base Color input or on any swatch card. The browser opens a native pixel magnifier allowing you to sample any pixel color directly from your desktop, images, or browser window.
Press Alt+V or click the Layout button in the hero quick action toolbar to toggle between 2-Column Side-by-Side Split Studio (ideal for widescreen desktop monitors with controls on the left and swatches on the right) and Full-Width Stacked mode. Your layout preference is automatically saved in your browser's localStorage.
Yes! Every swatch card calculates real-time WCAG 2.1 contrast ratios against pure white (#FFFFFF) and pure black (#000000), displaying AA / AAA compliance ratings so you know which text color to pair with each background swatch.
Press Space to regenerate unlocked colors in Random mode, Alt+P for DevToys Smart Clipboard Auto-Detect, Alt+D to star the tool, Alt+V to toggle Split vs Stacked layout, Alt+S to open the Developer API Studio, Alt+K or ? to open the Keyboard Shortcuts Guide, Alt+R to load a random preset, Alt+1..6 for instant quick copy formats (HEX list, CSS variables, Tailwind, JSON swatches, Markdown, and URL hash), Ctrl+Enter to copy palette hex codes, / to focus base hex input, and Esc to close modals or reset.
Advertisement
⚡
Chained Workflows (Piping)
Send this tool's output directly into another utility without manual copy-paste.
🎨 Client-Side Color Design Suite
Color Palette Generator & Extractor
Generate 3–10 swatch harmonious palettes, lock favorite colors, compute 7 color theory harmonies, extract dominant accents from photos, test color blindness accessibility, and export CSS, Tailwind, SVG, PNG, CSV, or JSON reports offline.
⚡ 100% Client-Side Engine
Zero server logging
🔒 Color Lock & Freeze
Keep favorite swatches
🎨 7 Harmony Rules & Blindness Sim
Theory & WCAG 2.1
📱 3 Device UI Mockups
SaaS, Mobile & Hero
📋 1-Click Code, SVG & CSV
Multi-format export suite
🎨 Curated Designer Presets:
⚙️ Palette Controls & Settings
Swatches:
5
Vision:
Tip: Click 🔒 on swatches you love to lock them while pressing Spacebar!
Create Accessible & Harmonious Color Palettes Instantly
A cohesive color palette is the foundation of effective UI/UX design, brand identity, and visual hierarchy. Whether you are crafting a design system in Figma, prototyping a Next.js web application, or styling digital artwork, finding colors that complement each other while meeting web accessibility guidelines is essential. Our free online color palette generator provides professional designers and developers with mathematical harmony tools, image extraction, and accessibility simulations.
With full client-side execution, you can lock favorite swatches, compute 7 geometric harmony rules (such as Triadic and Split-Complementary), test color blindness modes, evaluate WCAG 2.1 AA/AAA contrast ratios, and export directly to CSS variables, Tailwind configurations, SVG vectors, PNG artwork, or JSON reports.
Key Capabilities
7 Color Theory Harmony Rules: Analogous, Monochromatic, Complementary, Triadic, Split-Complementary, Tetradic, and Square.
Swatch Locks & Live Reorder: Freeze colors in place, adjust swatch count from 3 to 10, fine-tune with inline color pickers, and shift swatch positions.
Image Palette Extractor: Drag and drop any image or photo to automatically isolate its dominant color palette with local HTML5 Canvas quantization.
Color Vision Simulator: Preview how palettes appear under Protanopia, Deuteranopia, Tritanopia, and Achromatopsia conditions.
WCAG 2.1 Contrast Scoring: Real-time luminance and contrast ratio calculations against dark and light text.
Enhance your creative workflow with our complementary utilities: convert between HEX, RGB, HSL, HSV, and CMYK with the Color Converter, sample precise pixel values from uploaded graphics using the Image Color Picker, or shift color spectrums across illustrations using the Hue Shift Generator.
How to Create Cohesive Color Schemes
Follow these straightforward steps to generate, fine-tune, test, and export accessible color schemes.
1
Pick Workflow Mode
Choose between Random Generator, Color Harmonies (7 geometric rules), or Image Extractor to seed your palette.
2
Lock & Fine-Tune
Lock favorite swatches (🔒), adjust individual colors with the inline color picker, and press Spacebar to explore variations.
3
Test Accessibility
Check WCAG AA/AAA contrast ratios and simulate color vision deficiencies (Protanopia, Deuteranopia, Tritanopia) in real time.
Two complementary pairs; rich palette requiring careful dominant hue selection
E-commerce showcases, multi-tier pricing tables
Square
90°, 180°, 270°
Four equidistant hues across the color wheel; dynamic multi-colored layout
Infographics, game UI themes, multi-tenant portals
WCAG 2.1 Color Contrast Standards
Web Content Accessibility Guidelines (WCAG) contrast ratio requirements for readable user interfaces:
Standard
Minimum Ratio
Element Type
Compliance Details
WCAG AA Normal Text
4.5:1
Body text under 18pt (or bold under 14pt)
Standard legal requirement for most commercial websites
WCAG AA Large Text
3.0:1
Headings 18pt+ (or bold 14pt+)
Permissible for larger display headers and prominent banners
WCAG AAA Enhanced
7.0:1
Normal body text
Recommended for high-accessibility government & healthcare apps
WCAG AAA Large Text
4.5:1
Large headings 18pt+
Optimal legibility under varied lighting and device displays
Desktop Keyboard Shortcuts Reference
Accelerate your design workflow with hardware hotkeys for rapid palette generation, layout switching, smart clipboard extraction, and multi-format copying:
Category
Key Combination
Action & Workflow Behavior
Generation & Harmonies
Space
Regenerate unlocked colors (Random mode)
Generation & Harmonies
Alt + P
DevToys Smart Clipboard Auto-Detect & Color Extraction
Circular Arrow Navigation across Active Tabs/Lists
Frequently Asked Questions
Detailed answers regarding color theory, swatch locking, color blindness testing, and export formats:
What is a color palette generator and how does it work?
A color palette generator is an interactive design tool that creates aesthetically cohesive sets of colors for web and mobile applications, brand identities, and graphic illustrations. Our generator uses color wheel mathematics and color theory algorithms to generate harmonious combinations based on precise geometric angles.
How do color locks and Spacebar generation work?
Click the lock icon (🔒) on any color swatch card to freeze that color in place. When you press Spacebar or click 'Generate', locked colors remain unchanged while unlocked swatches are randomized or harmonized around your fixed selections.
Can I extract a color palette from an uploaded photo or logo?
Yes! Switch to 'Extract from Image' mode, drag and drop any image file (PNG, JPG, WebP, SVG), or click 'Sample Artwork'. The HTML5 Canvas pixel sampler analyzes the image and extracts the dominant harmonious colors with automatic luminance separation.
What color harmony modes are supported?
We support 7 core color theory harmony rules: Analogous (±30°), Monochromatic (varying lightness/saturation), Complementary (180° opposite), Triadic (120° equidistant), Split-Complementary (150°/210°), Tetradic (60°/180°/240°), and Square (90°/180°/270°).
How does the Color Blindness Simulator work?
The Color Blindness Simulator uses scientifically validated transformation matrices (Brettel/Viénot models) to simulate how your palette appears to people with Protanopia (red-blindness), Deuteranopia (green-blindness), Tritanopia (blue-blindness), and Achromatopsia (monochrome vision).
In what code and artwork formats can I export the palette?
You can copy individual HEX, RGB, or HSL values, copy full CSS Custom Properties (:root { --palette-1: ...; }), copy Tailwind CSS colors config, copy raw JSON HEX array, download an SVG vector palette file (.svg), export a high-res PNG palette artwork, download an RFC 4180 CSV specifications matrix, or download a full JSON audit report.
How does the Developer API & Integration Code Snippets Studio work?
Press Alt+S or click 'API Code' in the hero header to open the Developer API Studio modal. You can inspect and copy ready-to-use color constants across 8 programming languages (CSS Variables, Tailwind config, SCSS Map, TypeScript, Python, Swift/SwiftUI, Android Kotlin Compose, and Go) or download standalone integration source files with 1 click.
What live UI component mockups are available?
Click 'Preview UI' in the workspace toolbar to toggle between 3 realistic device mockups: a SaaS Analytics Dashboard Card, a Mobile Social Feed App Card, and a Modern Landing Hero Banner. Each template dynamically styles backgrounds, primary buttons, secondary outlines, status badges, and typography using your palette swatches while checking contrast readability.
Can I sample screen colors directly using the EyeDropper API?
Yes! On supported Chromium browsers (Chrome, Edge, Opera), click the EyeDropper icon (👁️) next to the Base Color input or on any swatch card. The browser opens a native pixel magnifier allowing you to sample any pixel color directly from your desktop, images, or browser window.
How do I switch between 2-Column Split Studio and Full-Width Stacked layouts?
Press Alt+V or click the Layout button in the hero quick action toolbar to toggle between 2-Column Side-by-Side Split Studio (ideal for widescreen desktop monitors with controls on the left and swatches on the right) and Full-Width Stacked mode. Your layout preference is automatically saved in your browser's localStorage.
Does this tool evaluate WCAG accessibility contrast?
Yes! Every swatch card calculates real-time WCAG 2.1 contrast ratios against pure white (#FFFFFF) and pure black (#000000), displaying AA / AAA compliance ratings so you know which text color to pair with each background swatch.
What keyboard hotkeys are supported across the studio?
Press Space to regenerate unlocked colors in Random mode, Alt+P for DevToys Smart Clipboard Auto-Detect, Alt+D to star the tool, Alt+V to toggle Split vs Stacked layout, Alt+S to open the Developer API Studio, Alt+K or ? to open the Keyboard Shortcuts Guide, Alt+R to load a random preset, Alt+1..6 for instant quick copy formats (HEX list, CSS variables, Tailwind, JSON swatches, Markdown, and URL hash), Ctrl+Enter to copy palette hex codes, / to focus base hex input, and Esc to close modals or reset.