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Color List Summary
Summarize an opaque color list with an exact encoded-RGB mean, normalized frequencies and first-seen tie-breaking dominant color.
Opaque numeric color text, one per line
Complete JSON color summary
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Enter Opaque color lines, one numeric color per physical line. Blank trimmed lines are ignored.
- Select Summarize palette.
- Download color-summary.json for normalized inputs, exact sums, frequencies, mean and dominant entry.
Examples
Equal black and white give encoded-RGB mean #808080. Their frequency tie is won by whichever appears first.
Limitations
- 1 through 1,000 colors, 300 UTF-16 units per original physical line, 301,000 total input units, 300 KiB input, 1 MiB report and 30 seconds.
- The mean is equal-weight arithmetic on encoded eight-bit sRGB channels, rounded half upward. It is not linear-light or perceptual averaging. Nonopaque alpha, named colors and CSS variables are rejected.
- No image sampling, subject detection, clustering, ICC/profile fidelity or calibrated image-average claim.
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