Color Palette Generator
Color ToolsGenerate harmonious color palettes from any base color with complementary, analogous, triadic, and monochromatic schemes.. Free, private — all processing in your browser.
complementary
analogous
triadic
split Complementary
monochromatic
The Color Palette Generator creates harmonious color schemes from any base color using the principles of color theory. Designers, developers, brand builders, and anyone making visual content hits this problem constantly: I have this one color I love, now I need 3-5 more colors that work with it. Picking complementary colors by eye is guesswork; this tool applies color theory rules (complementary, analogous, triadic, split-complementary, tetradic, monochromatic) to produce palettes that are guaranteed to work harmoniously.
Enter your base color as hex, RGB, HSL, or color name. The tool generates five common palette types simultaneously. Each palette includes 3-5 color swatches with their hex codes, RGB values, and HSL breakdowns. Click to copy individual colors or export the whole palette as CSS variables, Tailwind config, JSON, ASE (Adobe Swatch Exchange), or PNG. Accessibility contrast ratios are calculated between each color in the palette to help you pick combinations that pass WCAG AA or AAA requirements for text readability. Everything runs client-side in your browser, so brand colors and in-development designs stay private.
Color Palette Generator — key features
Six harmony types
Complementary, analogous, triadic, split-complementary, tetradic, and monochromatic palettes generated from one base color.
HSL-based generation
Uses HSL color model for mathematically correct color theory relationships, not ad-hoc eye-picking.
Multiple input formats
Accept hex, RGB, HSL, or color name as the base — paste whatever you have.
Accessibility contrast
Calculates WCAG AA and AAA contrast ratios between palette colors for text-on-color decisions.
Multiple export formats
CSS variables, Tailwind config, JSON, ASE for Adobe tools, or PNG image strip.
Variation control
Adjust saturation and lightness spread to produce more or less contrast within a palette.
Shareable URL
The URL encodes the base color so you can share specific palettes with collaborators.
Client-side only
Brand colors and in-development palettes never leave your browser.
How to use the Color Palette Generator
- 1
Enter a base color
Type a hex code (#FF6B35), RGB (rgb(255, 107, 53)), HSL, or color name into the base field.
- 2
Review palette types
Complementary, analogous, triadic, split-complementary, tetradic, and monochromatic palettes appear simultaneously.
- 3
Tweak if needed
Adjust saturation and lightness spread if palettes feel too muted or too vivid.
- 4
Check accessibility
See which color pairs meet WCAG AA or AAA contrast requirements for text readability.
- 5
Export
Copy individual hex codes, or export the full palette as CSS variables, Tailwind config, JSON, or PNG.
Common use cases for the Color Palette Generator
Web design and UI
- →Brand color system: Start from a brand’s primary color and generate supporting palettes for buttons, backgrounds, and accents.
- →Design system tokens: Export palettes as CSS variables ready to drop into a design system’s token file.
- →Landing page color choice: Quickly explore several palette types to find the mood that fits a specific page or campaign.
Product and branding
- →Logo color exploration: Test different palette types starting from a logo color to see which harmony feels right for supporting graphics.
- →Presentation slide design: Generate a small palette (3-5 colors) for a deck to ensure visual consistency across slides.
- →Social media templates: Build a palette for Instagram or Twitter templates that keeps posts visually cohesive.
Illustration and art
- →Illustration color study: Explore color harmonies for an illustration before committing to a final palette.
- →Digital art: Generate palettes to import into Photoshop or Procreate for consistent work across a series.
- →Print design: Export palettes as ASE for Adobe Creative Suite use in print layout and artwork.
Color Palette Generator — examples
Complementary
Opposite colors on the wheel.
base: #FF6B35 (orange)
complement: #358BFF (blue) (180° apart, maximum contrast)
Analogous
Adjacent colors, harmonious.
base: #FF6B35
#FFBB35 (yellow-orange) #FF6B35 (orange, base) #FF3535 (red-orange)
Triadic
Three equidistant hues.
base: #FF6B35
#FF6B35 (orange, base) #35FF6B (green) #6B35FF (purple)
Monochromatic
Same hue, varying lightness.
base: #FF6B35
#1F0A05 (very dark) #7F3618 (dark) #FF6B35 (base) #FF9466 (light) #FFBD99 (very light)
Tetradic
Two pairs of complements.
base: #FF6B35
#FF6B35 (orange) #35FFCC (teal, complement) #CCFF35 (yellow-green) #CB35FF (violet)
Technical details
Color palette generation rests on the HSL color model, which separates hue (the color itself, 0-360° on a color wheel), saturation (0-100%), and lightness (0-100%). Relationships between colors are expressed as angular offsets from a base hue.
Complementary: base hue + 180°. Opposite on the color wheel, maximum contrast. Example: red (0°) + cyan (180°).
Analogous: base hue ± 30° (and optionally ± 60°). Adjacent on the wheel, harmonious and calm. Example: orange, red, pink.
Triadic: base hue, +120°, +240°. Three equidistant hues, vibrant and balanced. Example: red, green, blue.
Split-complementary: base hue, plus two hues adjacent to its complement (+150° and +210°). Softer than full complementary but still has contrast.
Tetradic (rectangle): four colors at 0°, +60°, +180°, +240° from the base. Two pairs of complements.
Square: four colors equidistant (0°, +90°, +180°, +270°). Similar to tetradic but all equidistant.
Monochromatic: same hue with different saturation and lightness. Harmonious, calm, but can feel flat without variation.
The generator typically varies the other HSL components (saturation and lightness) slightly to produce visually pleasing palettes that are not flat. A triadic palette of pure hues would be three equally vibrant colors; adjusting lightness produces a more usable range.
Accessibility: contrast ratio between two colors is computed from their relative luminance per WCAG 2.1 formula. AA requires 4.5:1 for normal text (3:1 for large text), AAA requires 7:1 (4.5:1 for large). The tool highlights compliant pairs in the palette.
Export formats:
- CSS: --color-primary: #123456; variables for a CSS custom properties setup
- Tailwind: JSON snippet for tailwind.config.js extend
- JSON: plain array of hex values for import into design tools
- ASE: Adobe Swatch Exchange binary format for Photoshop/Illustrator
- PNG: palette strip image for visual reference
Common problems and solutions
⚠Pure hues can feel too saturated
A strict triadic palette of 100%-saturated hues is visually loud. Lower the saturation or adjust lightness to produce calmer variants that still follow the harmony rule.
⚠Complementary palettes cause vibration
Pure complementary colors (red + cyan) at high saturation can create unpleasant visual vibration when adjacent. Use split-complementary instead, or desaturate one color to reduce the effect.
⚠Insufficient contrast for text
Harmonious colors may not meet WCAG contrast requirements for text. Always check the contrast ratios shown and use tools like this one for text accessibility separately.
⚠Palette not considering context
A palette that works for digital UI may not work in print (CMYK gamut differs from RGB). Export as CMYK where print is the target; verify with print proofs.
⚠Color blindness considerations
Red-green palettes are invisible to people with deuteranopia or protanopia. Use the Color Blindness Simulator tool to verify palettes remain distinguishable for users with common color vision deficiencies.
⚠Monochromatic palettes feel flat
Same-hue palettes can lack energy. Add a single accent color with a different hue to provide visual variety while keeping overall harmony.
⚠Export format compatibility
ASE files are Adobe-specific. Sketch, Figma, and other tools have their own formats. Choose the export that matches the target tool or copy individual hex codes manually.
Color Palette Generator — comparisons and alternatives
Compared to Coolors, Adobe Color, or Paletton, this tool covers the same core color-theory harmonies with a simpler interface and exports for CSS, Tailwind, JSON, and ASE. Feature-rich palette apps have more advanced tools (palette discovery, community browsing) that are useful for inspiration but not essential for generating a palette from a known base color.
Compared to a color picker alone, this tool produces the supporting colors the palette needs. A color picker shows one color; this tool shows the 3-5 colors that work with it.
Compared to manual color-wheel work, this tool applies precise HSL math that guarantees accurate harmonic relationships, while eye-based picking tends to be off by a few degrees in a way that makes palettes feel unbalanced.
Frequently asked questions about the Color Palette Generator
▶What is a color palette?
A color palette is a coordinated set of colors chosen to work well together — usually 3 to 8 colors that share a visual relationship. Palettes are the foundation of design systems, brand identity, and any visual work where color harmony matters.
▶What are the common types of color harmony?
Complementary (opposite), analogous (adjacent), triadic (three equidistant), split-complementary (base plus two near its complement), tetradic (two complementary pairs), and monochromatic (same hue, varied lightness). Each creates a different mood: complementary is vibrant, analogous is calm, triadic is balanced.
▶Which harmony should I pick for my project?
For bold, high-contrast brands: complementary or triadic. For calm, approachable brands: analogous or monochromatic. For versatile design systems: split-complementary gives you contrast without the visual tension of pure complementary. Try several and see which feels right for your content.
▶Will these palettes meet accessibility contrast requirements?
Not automatically. Harmonious colors are not necessarily high-contrast, which you need for text readability. The tool shows WCAG contrast ratios between palette colors; pick combinations that meet 4.5:1 (AA) or 7:1 (AAA) for text.
▶Can I export to my design tool?
Yes. Export as CSS variables for web projects, Tailwind config for Tailwind users, JSON for generic imports, ASE for Adobe Photoshop/Illustrator, or PNG as a visual reference image.
▶Does this work for print?
The tool generates sRGB hex codes which cover the web and screen gamut. Print uses CMYK which has a different and smaller color gamut. For print, export to CMYK in your design tool and verify with a print proof.
▶Can I build a brand palette with this?
Yes — start with your brand’s primary color and pick a harmony type that matches your brand feel (analogous for calm brands, triadic for energetic ones). Use the accessibility check to ensure readability. Iterate on saturation and lightness until the palette feels right.
▶Is this saved on your servers?
No. All generation happens in your browser. Brand colors, in-development palettes, and unannounced designs never leave your machine — safe for NDA-bound work.
Additional resources
- Color Theory Overview — Interaction Design Foundation explanation of color theory fundamentals.
- WCAG Contrast Requirements — Official WCAG 2.1 contrast ratio requirements for text accessibility.
- Paletton color wheel — Interactive color wheel for exploring harmony relationships.
- Adobe Color — Adobe’s official color exploration and palette tool with Creative Cloud integration.
- A Dao of Color — Book (Refactoring UI) with practical color guidance for web and app designers.
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