Color Palette Generator
Create beautiful color palettes using color theory formulas, extract dominant colors from images locally, edit & lock colors, preview live UI mockups, and export to CSS, SCSS, Tailwind, JSON, SVG, PNG, and PDF 100% client-side.
Initializing Palette Engine & Workspace...
What is a Color Palette Generator?
Overview and core technical concepts
A Color Palette Generator builds harmonious color schemes (Monochromatic, Analogous, Complementary, Triadic, Tetradic) with HEX, RGB, HSL, and Tailwind CSS outputs.
Why Generate Color Palettes?
Key advantages, developer speedups, and security benefits
Design Unified SaaS Brand Identities
Establish primary accents, secondary highlights, neutral card surfaces, and state feedback colors.
Build Accessible Theme Systems
Ensure UI buttons, badges, and text colors maintain harmonious visual hierarchy.
When Shouldn't You Rely Solely on Palette Tools?
Anti-patterns, limitations, and when to choose an alternative approach
To verify strict WCAG 2.1 AA 4.5:1 text readability between two specific colors, use Color Contrast Checker.
Palette Color Array
Sample inputs, expected outputs, and code patterns
Indigo Brand Palette
Primary: #6366f1 | Secondary: #a855f7 | Accent: #06b6d4 | Dark Surface: #0f172aCommon Color Palette Mistakes
Frequent errors, security risks, and how to fix them
Frequently Asked Questions
A Color Palette Generator is an online tool that helps web designers, UI/UX developers, and brand creators build cohesive sets of colors based on color theory formulas (such as Complementary, Triadic, or Monochromatic), extract dominant colors from uploaded images, or discover aesthetic combinations across curated design categories.
ToolZeno uses an optimized K-Means canvas quantization algorithm that runs 100% locally inside your browser. Your image is sampled directly on an offscreen HTML5 canvas element to extract 3, 5, 8, or 10 dominant colors without ever uploading your file to a server, guaranteeing complete privacy.
When generating new harmonies or randomizing schemes, locked colors (indicated by the lock icon 🔒) remain unchanged while all unlocked colors are regenerated around them. This allows you to lock in a core brand color while experimenting with secondary and accent variations.
You can export your palette in HEX, RGB, RGBA, and HSL values, as well as code snippets for CSS :root variables, SCSS variables, Tailwind CSS configuration objects, and raw JSON. For visual documentation, you can download vector SVG palettes, high-res PNG swatch images, or PDF color spec sheets.
The tool evaluates the relative luminance of every color in your palette against pure white (#FFFFFF) and dark black (#000000) using WCAG 2.1 formulas, recommending readable text colors and highlighting low-contrast color pairs (< 3.0:1 ratio) to ensure inclusive design compliance.
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