Color Palette Generator
100% LocalGenerate complementary, analogous, triadic, and other color harmonies from a base color.
:root {
--color-1: #3cf6ed;
--color-2: #3cc1f6;
--color-3: #3c83f6;
--color-4: #3c45f6;
--color-5: #713cf6;
}Privacy note
This tool runs entirely in your browser. Your input is never uploaded, logged, or sent to AllDevToolsHub or anyone else, and it keeps working offline once the page has loaded.
How to Use Color Palette Generator
Pick a Base Color
Enter a hex color or use the color picker to choose a starting hue.
Choose Harmony Rule
Select complementary, analogous, triadic, split-complementary, or tetradic.
Generate Palette
The palette appears with harmony-based hues. Adjust lightness and saturation.
Copy Values
Copy individual colors or the full palette as hex, RGB, HSL, or CSS variables.
Color Palette Generator: the essentials
The Color Palette Generator builds mathematically-balanced 5-color schemes from any base, complementary, analogous, triadic, split-complementary, tetradic, monochromatic, or tints & shades, exported as HEX, RGB, HSL, or CSS custom properties. Built for designers seeking consistent palettes without manual color wheel work.
Key points
- Color harmonies are geometric: complementary is 180° apart, triadic 120°, analogous within 30–60°, and split-complementary takes the two neighbors of the complement.
- The 60-30-10 rule keeps palettes calm, 60% dominant neutral, 30% secondary, 10% accent, and prevents complementary pairs from vibrating against each other.
- HSL lets you change lightness or saturation with one number, so 'hsl(220 70% 50%)' becomes a 'hsl(220 70% 30%)' shade without recomputing RGB by hand.
- OKLCH (supported in all evergreen browsers since 2023) is perceptually uniform, equal lightness steps look equally bright, which HSL fails at across hues.
When to use it
- Bootstrapping a SaaS dashboard from a single brand hex by generating an analogous palette plus a 9-step monochromatic ramp for hover, pressed, and disabled states.
- Picking a high-contrast call-to-action color for a marketing landing page by taking the brand color's complement and verifying it hits 4.5:1 contrast on white.
- Designing data-visualization categorical scales by sampling triadic or tetradic harmonies, ensuring adjacent series stay visually distinct even with color-blindness simulation.
- Producing CSS custom properties (--primary, --primary-light, --primary-dark) for a Tailwind theme extension by exporting the generator's HSL output directly.
Common mistakes
- Picking arbitrary brand colors without a harmony rule and ending up with palettes that look muddy or clash, especially when shadows and tints are auto-derived later.
- Defining all colors in HEX so adjusting brightness requires color-picker round-trips, keeping the source palette in HSL or OKLCH makes shade scales trivial.
- Encoding meaning by color alone (red = error, green = success) without icons or text, which fails about 8% of male users with red-green color vision deficiency.
- Shipping light-gray placeholder text at #999 on white that measures 2.85:1 contrast and silently fails WCAG AA's 4.5:1 requirement for normal body text.
Learn More
What is Color Palette Generator?
Frequently Asked Questions
Technical Deep Dive
Color Palette Generator
Pick any base color and generate beautiful 5-color palettes using seven harmony rules: complementary, analogous, triadic, split-complementary, tetradic, monochromatic, and tints & shades. Copy colors in HEX, RGB, or HSL format, or export as CSS custom properties. Includes 10 preset colors and a random generator.
Pixel-Precise Output
Generates CSS, tokens, or assets that match what your design system expects.
Live Visual Preview
See changes the moment you make them, no copy-paste cycle between tool and IDE.
Copy-Paste Ready
Output is formatted for direct use in stylesheets, Tailwind configs, or Figma tokens.
01 Color Harmony Matrix
| Harmony Type | Angular Geometry | Visual Profile | Use Case |
|---|---|---|---|
| Complementary | 180° Offset | High Contrast | Action CTAs / Alerts |
| Analogous | ±30° Range | Natural / Calm | Hero Backgrounds |
| Triadic | 120° Spacing | Vibrant / Balanced | Marketing Interfaces |
| Monochromatic | 0° (L/C Vary) | Minimalist | SaaS Dashboards |
02 Palette Synthesis Pipeline
03 Picking a Harmony for the Job
The seven harmonies are not interchangeable, each solves a different design problem. A real picker matches harmony to product type:
-
Marketing site with one big CTA → Complementary A blue brand color (
#2563eb) and its complement (#eb9d25, warm orange) on the CTA. The 180° opposition makes the button impossible to miss, but use it only on the CTA. Filling the page with complementary pairs causes eye vibration. -
Data dashboard → Triadic or Tetradic Three or four distinguishable hues for chart categories. Triadic (120° spacing) gives visually distinct colors that maintain equal weight, important when no series should dominate the others. Avoid analogous palettes here: blue + blue-green + green looks unified and lovely until users can't tell two lines apart.
-
Editorial / long-form reading → Analogous A 30° sweep around a warm base for headers, drop caps, and pull quotes. The low contrast between adjacent hues stays calm under sustained reading. New York Times article art directors use this constantly.
-
SaaS app with content-first UI → Monochromatic + 1 accent Stripe, Linear, Vercel: one brand hue varied across 9-11 lightness steps, plus a single semantic accent for danger/success. The UI gets out of the way; the user's data is the visual subject.
-
Educational / kids' app → Split-Complementary Energy of complementary, softened. Lets you use bold contrasting elements (a red character, a blue-green background) without the punishing vibration of red-on-green pure complement. Cartoon Network and Duolingo lean on this shape.
04 Worked Examples
hsl(220, 70%, 50%) /* #2563eb, Tailwind blue-600 */hsl(40, 70%, 50%) /* #d99425, warm amber */Note that HSL complement is hue-only, lightness and saturation are preserved. The pair shares perceptual weight, so neither dominates. If you instead used #ffa500 (a hotter, more saturated orange), the CTA would scream over the rest of the design.
hsl( 60, 100%, 50%) /* #ffff00, yellow, blinding */
hsl(240, 100%, 50%) /* #0000ff, blue, much darker
HSL is mathematically convenient but perceptually broken, equal L values do not mean equal perceived brightness. Yellow at L=50% looks like 90%; blue at L=50% looks like 25%. If you build a "200/300/400/500" shade scale by stepping L uniformly, your color ramps will feel uneven across hues.
oklch(0.7 0.2 90) /* yellow at L=0.7 /
oklch(0.7 0.2 264) / blue at L=0.7, actually matches yellow's brightness */If your tooling supports OKLCH (Chrome 111+, Safari 15.4+), use it for ramp generation. Stick to HSL/HEX only for the final exported tokens.
color: #60a5fa; /* light blue, brand accent */
background: #ffffff; /* white /
contrast ratio: 2.83:1 / ❌ Fails WCAG AA (needs 4.5:1) /
color: #1d4ed8; /same hue, L=0.36 /
background: #ffffff;
contrast ratio: 7.51:1 / ✓ Passes WCAG AAA */
Generated palettes are decorative starting points. Every text/background pair in real product copy needs a contrast check, the Tailwind shades from 50-900 exist precisely so you can pick the right L for the right surface.
05 Related Tools
A palette is the input to several downstream design steps. The companions below are the ones a designer reaches for next:
Contrast Checker
WCAG AA/AAA verification for every text/background pair you derive from the palette.
Color Blindness Simulator
Preview how your palette appears under protanopia, deuteranopia, and tritanopia, ~8% of male users.
Color Converter
Convert any palette color across HEX, RGB, HSL, OKLCH, and HSV for whichever pipeline you ship to.