UtilityKit

500+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

Color Palette Generator

Generate random five-color hex palettes, lock favorites, and copy colors instantly.

About Color Palette Generator

A well-chosen color palette is the foundation of any visual design, and picking harmonious colors from scratch without color theory knowledge is surprisingly difficult. Color Palette Generator takes a single base color — entered as a hex code, an RGB value, or picked from a color wheel — and derives a full palette using established color harmony rules: complementary (the color directly opposite on the wheel), triadic (three colors spaced 120° apart), analogous (three colors adjacent on the wheel), and split-complementary (the base plus two colors flanking its complement). Each generated palette shows a visual swatch grid with hex codes displayed on every color so you can immediately evaluate contrast and harmony. Click any hex code to copy it, or copy the entire palette as a comma-separated or JSON array for pasting into CSS, Figma, or a design system token file. All color math is.

Why use Color Palette Generator

Five Harmony Models

Generates complementary, triadic, analogous, split-complementary, and monochromatic palettes from a single base color, covering every major color theory approach used in graphic and UI design.

HSL-Based Color Math

All hue rotation and saturation calculations are performed in HSL (Hue, Saturation, Lightness) space rather than raw RGB, producing perceptually balanced palettes where colors appear equally vivid and harmonious.

Visual Swatch Preview

Each palette renders as a row of full-color swatches with hex codes overlaid, letting you immediately judge contrast, visual weight, and whether the palette suits your brand or design context.

Multiple Copy Formats

Export individual hex codes with one click, or copy the full palette as CSV, as a JSON array, or as CSS custom property declarations for immediate use in stylesheets and design token files.

Color Picker and Hex Input

Enter colors as hex codes if you already know the value, or use the built-in color picker wheel for visual exploration — both inputs stay synchronized so switching between them requires no extra steps.

No Watermarks or Account Required

Unlike subscription design tools that restrict palette exports to paid tiers, this tool generates and exports any palette with no sign-up, no watermark, and no daily use limit.

How to use Color Palette Generator

  1. Enter your base color in the hex input field (e.g. #3B82F6) or click the color picker swatch to open a visual color chooser.
  2. Select the harmony type you want: Complementary, Triadic, Analogous, Split-Complementary, or Monochromatic.
  3. The palette generates instantly — a row of color swatches appears with hex codes displayed on each swatch.
  4. Click any swatch's hex code to copy that individual color to your clipboard.
  5. Use the Copy All button to copy the full palette as a comma-separated hex list or as a JSON array.
  6. Adjust the base color by dragging the hue, saturation, or lightness sliders to explore adjacent palette variations without retyping the hex value.

When to use Color Palette Generator

  • When starting a new web project and needing a primary, secondary, and accent color that are guaranteed to be harmonious rather than chosen by guesswork.
  • When a client provides a single brand color and you need to extend it into a full UI palette with appropriate supporting colors.
  • When designing a data visualization and needing a set of clearly distinguishable but visually coherent colors for chart series.
  • When building a dark mode theme and needing a monochromatic palette with a range of lightness values from the same hue family.
  • When exploring color options quickly during the early stages of a design iteration and not wanting to open a full design application.
  • When teaching or learning color theory and needing an interactive demonstration of complementary, triadic, and analogous relationships.

Examples

Complementary palette from blue

Input: Base: #3B82F6 (blue) | Harmony: Complementary

Output: #3B82F6 (base blue) → #F6963B (complementary orange)

Triadic palette from red

Input: Base: #EF4444 (red) | Harmony: Triadic

Output: #EF4444 (red) · #44EF74 (green) · #7444EF (violet)

Analogous palette from teal

Input: Base: #14B8A6 (teal) | Harmony: Analogous

Output: #14B8A6 (teal) · #14B852 (green-teal) · #1467B8 (blue-teal)

Tips

  • Start with your brand's primary color as the base, generate a triadic palette, and use the two non-primary colors as your interactive and accent system colors — this guarantees brand cohesion across the UI.
  • For accessible palettes, check each generated swatch against your background color in a contrast checker after generation — the palette tool optimizes for harmony, not contrast ratio.
  • The analogous mode with a low-saturation base color is ideal for generating subtle background tones (card surfaces, sidebars, hover states) that feel related without competing for attention.
  • Copy the palette as a JSON array and paste it into Tailwind's extend.colors config to instantly make all five shades available as utility classes in your project.
  • If the generated palette feels too saturated or too muted, adjust the base color's saturation using the HSL sliders and regenerate — the harmony relationships remain constant while the overall vividness shifts.

Frequently Asked Questions

What is a complementary color palette?▾
A complementary palette pairs your base color with the color directly opposite it on the color wheel — 180° away in hue. Complementary pairs create maximum contrast and visual tension, making them effective for call-to-action buttons, emphasis states, and anywhere one color needs to stand out clearly against another.
What is a triadic color palette?▾
A triadic palette uses three colors evenly spaced around the color wheel, 120° apart from each other. Triadic schemes are vibrant and high-contrast while remaining balanced because no single color dominates. They work well for interfaces that need energy and diversity without clashing.
What is the difference between analogous and monochromatic palettes?▾
Analogous palettes use colors adjacent on the color wheel (within about 30–60° of each other), creating a harmonious, low-contrast look that feels natural and serene. Monochromatic palettes stay on a single hue but vary only in lightness and saturation, producing an even more unified, minimal look — ideal for backgrounds and subtle component hierarchies.
Why does the tool use HSL instead of RGB for color calculations?▾
RGB mixes red, green, and blue channels but does not map well to human perception of hue, brightness, and vividness. HSL (Hue, Saturation, Lightness) separates these perceptual dimensions, so rotating the hue value by 120° actually produces a color that looks 120° different to the human eye. This makes HSL the correct space for color harmony math.
Can I input a color as RGB or HSL instead of hex?▾
The primary input accepts hex codes (e.g. #3B82F6). You can also use the color picker swatch which accepts any native browser color format. If you need to convert an RGB or HSL value to hex before entering it, use the Color Converter tool in the Developer section.
How do I use the generated palette in CSS?▾
Use the 'Copy as CSS variables' export option to get the palette formatted as --color-1 through --color-5 custom property declarations. Paste them into your :root block and reference them throughout your stylesheet with var(--color-1) etc.
Are the generated palettes accessible (WCAG compliant)?▾
The tool generates palettes based on color harmony theory, not accessibility contrast requirements. After choosing a palette, verify text-on-background contrast ratios using a dedicated contrast checker. WCAG AA requires a minimum 4.5:1 ratio for body text.
Can I save or bookmark a generated palette?▾
The tool updates the URL query string with the base color and harmony type as you change settings, so you can bookmark or share the URL to return to exactly the same palette later. Anyone who opens the link sees the same colors.

Explore the category

Random Color Generator Fullscreen random HEX swatches with spacebar redraw. Password Generator Generate strong random passwords Username Generator Generate random username ideas quickly MAC Address Generator Generate random MAC addresses in multiple formats Random Number Generator Generate random integers with custom min/max range, quantity, and unique option. Would You Rather Generator Generate random 'Would You Rather' dilemma questions for ice-breakers, party games, and conversations.
Color Spaces Explained: RGB, HSL, CMYK, and HEX for Developers RGB and HEX are the same thing in different notations. HSL is much more intuitive for humans. CMYK lives in print. Understanding these disti Apr 2026 · 8 min

Glossary

Color wheel
A circular arrangement of colors organized by hue, used to visualize relationships between colors. Adjacent colors are analogous; colors 180° apart are complementary; colors 120° apart form a triadic set.
HSL (Hue, Saturation, Lightness)
A cylindrical color model that separates hue (0–360°, the color itself), saturation (0–100%, vividness), and lightness (0–100%, brightness). Better aligned with human color perception than RGB for harmony calculations.
Complementary colors
Two colors positioned 180° apart on the color wheel. They provide maximum contrast and vibrate visually when placed side by side — effective for emphasis but fatiguing when used in large adjacent areas.
Triadic harmony
A three-color scheme where hues are evenly spaced 120° apart on the color wheel. Triadic palettes are vibrant and balanced, often used in playful, energetic, or multi-brand design systems.
Analogous colors
Colors that sit adjacent to each other on the color wheel, typically within 30–60° of hue. Analogous schemes feel cohesive and natural, resembling gradients found in sunsets, foliage, and other natural phenomena.
Split-complementary
A three-color scheme using the base color plus the two colors flanking its complement (rather than the complement itself). This retains strong contrast while being softer and easier to balance than a pure complementary pair.