Zero Snippet

Color palette generator online — complementary, triadic, analogous, and monochrome schemes from one base hue

Use this free online color palette generator to turn a single brand color or sampled photo into production-ready HEX swatches for complementary, triadic, analogous, and monochromatic harmonies. Adjust HSL (hue, saturation, lightness) with sliders, paste #RRGGBB values, or click Upload image (with the upload icon) to average pixels from a mood-board asset. Every swatch includes a copy icon button for one-click HEX, plus copy entire palette rows as comma-separated codes or CSS custom properties. Processing stays in your browser—ideal for design systems, marketing sites, and SaaS dashboards. Pair results with the WCAG contrast checker, the color picker and converter for RGB and HSL strings, and the tint and shade generator when you need a fuller lightness scale. Explore all design and color tools from the home page.

Averages pixels to set the base color—then adjust HSL for your system.

Complementary

Base hue plus a 180° opposite—high contrast pairs.

Base

#1e77eb

Complement

#eb921e

Triadic

Three hues 120° apart—balanced, vibrant triads.

Primary

#1e77eb

+120°

#eb1e77

+240°

#77eb1e

Analogous

Neighbors on the wheel—smooth, cohesive gradients.

-36°

#1eebe5

-18°

#1eb5eb

Center

#1e77eb

+18°

#1e39eb

+36°

#401eeb

Monochrome

Same hue and saturation; lightness steps for UI depth.

Step 1

#04172f

Step 2

#0b3b7a

Step 3

#1368d8

Step 4

#5f9ff1

Step 5

#c7ddfa

Export HEX for Figma tokens or CSS. For RGB, HSL, and CMYK strings, use the color picker and converter. Check contrast with the contrast checker.

Why harmony palettes matter for branding and UI systems

Random HEX values are hard to defend in design reviews. A structured color palette anchored to one hue keeps marketing, product, and engineering aligned on which accents belong together. Complementary schemes emphasize opposition on the color wheel—great for alerts and primary buttons on neutral shells. Triadic palettes distribute energy across three primaries, which helps data visualizations and multi-state components stay distinct. Analogous palettes feel calm because neighboring hues blend smoothly—common in editorial layouts and health or finance brands. Monochrome ramps fix hue and saturation while stepping lightness, which mirrors how teams define surface layers, borders, and disabled states in a single brand color.

Searchers often look for complementary color generator, triadic color scheme maker, or extract palette from image. This page combines those workflows: mathematical HSL rotations for harmonies, optional bitmap sampling for inspiration, and copyable output for handoff. Harmony alone does not guarantee accessible text—always validate pairs against WCAG contrast targets before shipping production CSS.

How to use this palette generator (step by step)

  1. Set your base color with the native color picker, type a HEX code such as #0ea5e9, or move the hue, saturation, and lightness sliders until the anchor matches your brand guidelines.
  2. Optionally click Upload image to average colors from a logo, screenshot, or mood board. Refine the result with sliders if the photo skews gray or brown.
  3. Review the four sections— complementary, triadic, analogous, and monochrome. Use the Copy control (with the copy icon) on each swatch, or copy an entire row as a HEX list or CSS variables block for your stylesheet or token JSON.
  4. Paste values into Figma variables, Tailwind theme extensions, or design tokens. Before finalizing UI text colors, run the same HEX values through the contrast checker and preview states with the color blindness simulator.

HSL, HEX, and why we rotate hue for harmonies

This tool computes harmonies in HSL space and converts to sRGB HEX for interoperability. Rotating hue by fixed degrees (for example 180° for complements, 120° steps for triads) matches how designers are taught the color wheel. Saturation and lightness stay tied to your base for each harmony group so palettes feel cohesive; the monochrome section instead steps lightness while locking hue and saturation, which is the usual pattern for neutral-adjacent UI layers.

Internal tools that complete a color workflow

After you export HEX codes, convert them to other formats with the color picker and converter, build gradients for hero sections with the gradient generator or CSS gradient tools, and prototype shadows and radii with the box shadow and border radius generators. For web performance and SEO audits unrelated to color, browse HTTP headers and meta tags utilities when you ship landing pages that showcase your new palette.

Related design and color tools

Highlights from the design and color tools section:

  • Color Picker & Converter — Pick colors and copy HEX, RGB, HSL, and CMYK values for design systems and handoff.
  • Color Contrast Checker — Test text and background pairs against WCAG AA and AAA contrast ratios for accessible UI.
  • Gradient Generator — Design linear and radial gradients visually and copy production-ready CSS in seconds.
  • Tint & Shade Generator — Generate lighter tints and darker shades from a brand color for consistent UI scales.
  • Color Blindness Simulator — Preview images or palettes under common color-vision deficiencies to validate inclusive design.
  • Box Shadow Generator — Tune offset, blur, spread, color, and inset shadows with live preview and copyable CSS.
  • Border Radius Generator — Adjust each corner visually and export shorthand border-radius for cards and buttons.
  • CSS Gradient Generator — Build multi-stop gradients with angles and stops—outputs clean, modern CSS gradients.
  • Flexbox Playground — Tweak flex container and item properties and see layout updates in real time.
  • CSS Grid Playground — Prototype grid templates, gaps, and placement with instant visual feedback.
  • Favicon Generator — Create favicon.ico and PNG sizes from an image or text for every device and browser tab.

Frequently asked questions

What is a complementary color palette and when should I use it?
A complementary palette pairs your base hue with another roughly 180° away on the color wheel (for example blue and orange). It creates strong contrast—ideal for call-to-action buttons on neutral backgrounds, sports branding, or anywhere you want two hues to pop against each other. After picking colors here, validate text contrast with our WCAG contrast checker before shipping UI.
How does a triadic palette differ from complementary?
Triadic schemes use three hues spaced about 120° apart (for example red, yellow, and blue). They stay vibrant but feel more balanced than pure complementary pairs because no single opposition dominates. Use one color as primary and the other two as accents. Our generator keeps your saturation and lightness so you can tune mood with the HSL sliders.
What are analogous colors good for?
Analogous palettes cluster neighboring hues (here, ±18° and ±36° around your base). They read as harmonious and calm—common for dashboards, editorial sites, and nature-inspired brands. If contrast feels low for text, pair these fills with a neutral gray or increase lightness separation, then test with the contrast checker.
Why does monochrome only change lightness?
Monochrome (or monochromatic) palettes hold hue and saturation fixed and step lightness. That mimics how designers build tints and shades for one brand color—buttons, borders, and backgrounds that feel cohesive. For a full lightness scale with named steps, you can also use the tint and shade generator after locking a brand hex.
How does uploading an image set the base color?
We draw the image to an off-screen canvas and average the sRGB values of all pixels (alpha is blended on white). The result is converted to HSL so you can nudge hue, saturation, and lightness afterward. Busy photos may skew brown or gray—crop to a representative region in an editor first, or use the native color picker for a precise brand swatch.
Is this color palette generator free and private?
Yes. Harmony math and image sampling run entirely in your browser. Nothing is uploaded to our servers. You can disconnect from the network after the page loads if you prefer an extra air gap for client work.
Can I copy palettes into Figma, CSS, or design tokens?
Each swatch has a copy button for its HEX value. Use “Copy CSS vars” to paste a block of custom properties you can drop into stylesheets or token files. For RGB/HSL strings or CMYK handoff, open the color picker and converter tool and paste the same hex there.
How do I check accessibility for color-blind users?
Harmony rules do not guarantee readable text. Always check contrast ratios for foreground and background pairs. After exporting hex codes, use our color blindness simulator to preview UI or graphics under common vision deficiencies and adjust hues if critical states become indistinguishable.