Color Analysis Tool

A free online color analysis tool designed for designers and developers to assess color harmony, contrast, and accessibility in palettes.

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About This Tool

The tool analyzes color palettes to quantify harmony, perceptual contrast, and accessibility for UI and branding. It accepts HEX, RGB, or HSL inputs and computes harmony relations such as analogous, complementary, and triadic schemes, along with WCAG-based contrast metrics. Conceptually, colors are processed in sRGB, converted to perceptual spaces, and scored against standardized thresholds to produce actionable guidance. This enables designers and developers to validate contrast for readability, ensure accessible branding, and optimize palettes for different platforms. Unique value lies in combining objective contrast calculations with harmony and accessibility diagnostics in a single, exportable analysis. Core features include input parsing, color space conversions, contrast computation, harmony scoring, and accessibility flags, plus optional batch analysis and report exports. Typical use cases include evaluating a new UI theme, auditing existing brand palettes for accessibility compliance, and iterating color sets during early design phases to reduce back-and-forth. The tool supports rapid iteration, objective decision making, and consistent color governance across teams.

How to Use

  1. Provide inputs: specify colors in HEX, RGB, or HSL.
  2. Choose analysis mode: harmony, contrast, or accessibility.
  3. Run analysis: tool computes metrics and recommendations.
  4. Review outputs: examine contrast ratios, harmony alignment, and accessibility status.
  5. Iterate: adjust colors and re-run analysis.
How to use color analysis tool online

Frequently Asked Questions

Find Quick Answers

How is color contrast measured and what thresholds are used?
Contrast is computed using the WCAG 2.1 luminance formula. The contrast ratio is reported as L1+0.05 over L2+0.05, with AA thresholds at 4.5:1 for normal text and 3:1 for large text. The tool flags any ratio below these thresholds and suggests adjustments.
Can I analyze multiple palettes at once?
Yes. The tool supports batch analysis to compare several palettes simultaneously, returning per-palette metrics and a consolidated report to aid quick comparisons and governance.
Which color inputs are accepted?
Inputs may be provided in HEX, RGB, or HSL. The tool normalizes to sRGB for computations and reports back standardized values and derived metrics.
What outputs are produced?
Outputs include per-color luminance, contrast ratios, hue/saturation values, harmony scores, accessibility status, and recommended color adjustments. A structured report and optional export formats are provided.

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