Color Harmony Tool

Generates harmonious color palettes for design projects using color theory rules and accessibility checks.

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About This Tool

The Color Harmony Tool generates palettes from a base color using color theory rules. It targets UI/UX designers, branding teams, and digital artists who need repeatable, theory-based palettes for websites, apps, logos, and marketing materials. Users provide a base hue, saturation, and lightness, select a harmony mode, and specify a color count (2–6). The tool returns a hex array ready for design systems and CSS tokens.
Conceptually, the tool applies mode-specific hue offsets while preserving or modestly varying saturation and lightness. It converts results to hex, ensures values stay in the sRGB gamut, and can compute simple accessibility signals. Optional accessibility guidance flags low-contrast palettes and suggests adjustments.
Value and differentiators include fast, theory-grounded palette generation, built-in accessibility checks, easy export to CSS variables or design tokens, and support for common harmony schemes. Typical use cases include landing pages, product interfaces, and branding refreshes. The tool scales for teams seeking consistent palettes across multiple projects.

How to Use

  1. Provide inputs: base_hue 0–360, base_saturation 0–100, base_lightness 0–
  2. Choose harmony_mode: analogous, complementary, triadic, tetradic, or square.
  3. Set color_count between 2 and
  4. Run calculation to generate the palette and optional contrast metrics.
  5. Review outputs and export hex values or design tokens.
How to use color theory tool for designers

Frequently Asked Questions

Find Quick Answers

What inputs are required?
At minimum, provide base_hue (0–360), base_saturation (0–100), base_lightness (0–100), and harmony_mode. The tool will generate 2–6 colors as a hex palette and validate ranges.
How are palettes evaluated for accessibility?
The tool computes contrast ratios against white and black, flags potential issues, and suggests tweaks to reach WCAG-compliant contrast thresholds.
Can I export results as CSS variables?
Yes. The tool supports exporting the hex palette as CSS variables or a token file for design systems.
What harmony modes are supported?
Analogous, complementary, triadic, tetradic, and square; each mode applies a defined set of hue offsets to the base hue while maintaining overall saturation/lightness.

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