Free Color Picker & Palette Generator Online

What Color Picker & Palette Generator Does

Choosing colors for a website, app, or design project usually means juggling multiple tools — one to pick a color, another to convert formats, a third to generate palettes, and yet another to check accessibility contrast. Our Color Picker & Palette Generator brings all four workflows into a single interface. Whether you are a front-end developer matching brand guidelines, a designer exploring new palettes, or a content creator picking banner colors, this tool gives you everything you need without switching tabs.

The entire tool runs 100% client-side in your browser. No color data, palettes, or preferences are ever sent to a server. There is no signup, no tracking, and no cookies. Open the page and start working immediately.

How It Works

The tool is organized into four tabs across the top of the interface: Picker, Palettes, Converter, and Contrast. Each tab handles a distinct color workflow.

Picker — The main tab opens a visual 2D color area where you click or drag to select saturation and brightness, with a hue bar underneath for choosing the base hue. As you move the crosshair indicator, the selected color updates in real time. Below the picker area, you will see a color swatch alongside a HEX input field where you can type or paste a value directly. Three format rows display the current color as HEX, RGB, and HSL — click any row to copy that value to your clipboard. The Add to History button saves your current selection to a row of swatches at the bottom, storing up to 10 recent colors for quick recall. Click any history swatch to jump back to that color.

Palettes — Choose a base color using the color input or HEX text field, then select a harmony rule: Complementary, Analogous, Triadic, Split-Comp, Monochromatic, or Random. Hit Generate Palette and the tool produces five harmonious colors based on color theory. Each swatch displays its HEX value and a copy button. You can lock any individual color with the lock icon — locked colors stay fixed while you regenerate the rest around them. Once you have a palette you like, use the Export buttons to copy it as CSS custom properties, Tailwind CSS config, SCSS variables, or raw JSON, ready to paste into your project.

Converter — Paste or type any color value into the input field. The converter auto-detects the format — whether you enter #3B82F6, rgb(59, 130, 246), or hsl(217, 91%, 60%) — and instantly displays the equivalent in all three formats alongside a preview swatch. Click any format row to copy it. If the input cannot be parsed, a clear error message tells you which formats are accepted.

Contrast — Enter a foreground (text) color and a background color using the color pickers or HEX text fields. A Swap Colors button lets you reverse them instantly. The tool renders a live preview panel showing sample text in your chosen combination, then displays the contrast ratio in large text (e.g., 12.63:1). Below that, four cards show pass/fail results for WCAG AA Normal (4.5:1), AA Large (3:1), AAA Normal (7:1), and AAA Large (4.5:1), so you can verify accessibility compliance at a glance.

Why Use Our Color Picker

All-in-one workflow. Most online color tools handle only one task. This one combines picking, palette generation, format conversion, and contrast checking in a single page. No more bouncing between four different sites.

Real color theory, not random swatches. The palette generator uses established harmony rules — complementary, analogous, triadic, split-complementary, and monochromatic — to produce colors that actually work together. The lock-and-regenerate feature lets you iterate quickly while preserving colors you have already committed to.

Developer-ready export. Every color value is one click from your clipboard. Palettes export directly as CSS custom properties, Tailwind config objects, SCSS variables, or JSON. No reformatting needed.

Accessible by design. The contrast checker evaluates against all four WCAG thresholds simultaneously, with clear pass/fail indicators. Building accessible interfaces should not require a separate trip to a different tool.

No signup, no limits, no tracking. Everything processes locally in your browser using JavaScript. There are no accounts, no rate limits, no watermarks, and no server calls. Your color choices are yours alone.

Use Cases

Building a brand color system. Start with your primary brand color in the Picker tab, then switch to Palettes to generate complementary and analogous options. Lock the primary, regenerate secondary and accent colors until the set feels right, then export as CSS variables for your design system.

Checking accessibility compliance. Before shipping a design, open the Contrast tab and test your text/background combinations. The tool tells you instantly whether your colors pass WCAG AA and AAA standards for both normal and large text, saving you from post-launch remediation.

Converting colors between codebases. A designer hands you an HSL value; your codebase uses HEX. Paste the HSL string into the Converter tab and copy the HEX output. The auto-detection means you do not need to specify which format you are providing.

Exploring color palettes for a new project. When you are in the early exploration phase, use the Random harmony mode to generate unexpected combinations. Lock any color that catches your eye and keep regenerating the rest. Switch to Monochromatic mode when you need a tonal scale for backgrounds and surfaces.

Rapid prototyping in the browser. During a live prototyping session, keep the Color Picker open in a side tab. Pick colors visually, copy the HEX or RGB value, and paste it straight into your CSS. The history row keeps your recent selections available for quick reuse without writing anything down.

Preparing developer handoff documentation. Export your finalized palette as JSON or CSS custom properties and include it directly in your design handoff notes. The named output (primary, secondary, accent, muted, highlight) gives developers semantic labels to work with immediately.

Tips and Best Practices

Use the keyboard for precision. The picker area and hue bar both support arrow key navigation. Hold Shift while pressing arrow keys to move in larger increments of 10 units, which is useful for fine-tuning saturation or brightness without overshooting.

Lock before you regenerate. Found one perfect color in your palette but want to explore options for the others? Click the lock icon on that swatch before hitting Generate Palette. Locked colors stay fixed while the rest regenerate around them, so you never lose a color you have already decided on.

Test contrast early, not late. Accessibility issues are cheapest to fix during the design phase. Run your primary text/background combination through the Contrast tab before committing to a palette. Aim for at least WCAG AA Normal (4.5:1) for body text, and ideally AAA (7:1) for maximum readability.

Leverage the history row. As you explore colors in the Picker tab, click Add to History for any candidate worth remembering. The history stores your last 10 selections and lets you jump back to any of them with a single click, making side-by-side comparison effortless.

Match your export format to your stack. If you are working in a Tailwind CSS project, export as Tailwind config. For vanilla CSS or frameworks like Astro, use the CSS custom properties export. SCSS projects get dollar-sign variables. JSON works for design tokens or API-driven theming. Each format is ready to paste directly into your code with no reformatting.