Triadic Color Palette Generator

Takes a base hex color and builds a 3-swatch palette using hues evenly spaced 120 degrees apart around the color wheel (the classic triadic scheme), all at the same saturation and lightness as the base. Rendered as a downloadable PNG strip. A free online tool from Staaarter, right in your browser.

Runs locallyUpdated 2026-07-26

Overview

Introduction

This tool builds a classic triadic color scheme — three hues evenly spaced around the color wheel — from any hex color you provide.

It's a fast way to get a vibrant, balanced 3-color palette without manually calculating hue offsets.

What Is Triadic Color Palette Generator?

A generator that converts a base hex color to HSL and produces two additional hues, each exactly 120 degrees further around the wheel, holding saturation and lightness constant across all three.

The three resulting colors are rendered as equal-width square swatches in a single downloadable PNG, in hue order starting from the base color.

How Triadic Color Palette Generator Works

The base color's hue, saturation, and lightness are extracted, then two new hues are computed as (base hue + 120) mod 360 and (base hue + 240) mod 360.

All three hues are converted back to RGB using the base's saturation and lightness, then painted into a 3-swatch PixelBuffer.

When To Use Triadic Color Palette Generator

Use it when you want a vibrant, well-balanced 3-color palette for a brand identity, illustration, or data visualization series.

It's also a reliable starting point when you need real color variety but still want the palette to feel intentional rather than random.

Features

Advantages

  • Produces a mathematically exact 120-degree hue spacing every time, with no manual guesswork.
  • Balances vibrancy and harmony better than arbitrary color picks.
  • Works with any base color and preserves its saturation/lightness character across the whole palette.

Limitations

  • The fixed 120-degree spacing isn't adjustable; use the Analogous generator if you need a custom angle.
  • With a highly saturated base color, all three triadic swatches can feel equally loud; consider reducing saturation for a calmer result.

Examples

Primary triad from red

Input

#FF0000

Output

Pure red, pure green, and pure blue swatches

Hues 0, 120, and 240 degrees at full saturation and 50% lightness land exactly on the RGB primaries.

Triad from a muted teal

Input

#2A9D8F

Output

A teal swatch plus two other evenly-spaced hues at the same softer saturation/lightness

The output triad inherits the base color's exact saturation and lightness, keeping the whole palette equally muted.

Best Practices & Notes

Best Practices

  • Let one of the three triadic colors dominate the design and use the other two as supporting accents rather than equal thirds.
  • Lower the base color's saturation first if you want a triadic palette that feels sophisticated rather than primary-color loud.

Developer Notes

Hue offsets are computed with simple modular arithmetic (+120, +240) on top of a pure HSL-to-RGB conversion function; the lib file has no DOM or canvas dependency, keeping the palette math fully unit-testable in Node.

Triadic Color Palette Generator Use Cases

  • Building a vibrant 3-color brand palette from a single starting color
  • Choosing distinguishable colors for a chart's data series
  • Generating a bold color scheme for illustration or game art

Common Mistakes

  • Using all three triadic colors at equal visual weight, which can feel chaotic; pick one dominant and two accents instead.
  • Expecting a subtle result — triadic schemes are inherently more vivid and contrasting than analogous or monochromatic ones.

Tips

  • Try desaturating the base color slightly before generating if the resulting triad feels too intense.
  • Use the triadic swatches for distinct UI states (success/warning/info) since they're naturally easy to tell apart.

References

Frequently Asked Questions