Color schemes generator

Color schemes

Compare category colors and their relative emphasis before applying a palette to a chart. Create a private, publication-ready color schemes directly in your browser without transmitting sensitive rows off-device. Data is processed locally on your hardware with zero server uploads, enabling instant export to SVG, PNG, and Excel data.

Compositioncolorpaletteaccessibility

Edit the data, then export.

Everything runs in your browser. Your data is not uploaded.

Data

Paste tab-separated data from Excel or edit the cells directly.

Paste or import table data

Paste a header row, or choose a local CSV/TSV file. Files are read in this browser and capped at 500 rows.

Choose CSV/TSV

Appearance

Chart title

Palette

Width Data labels Gridlines Axes LegendBackground

Preview

Sample preview of the example data. The live chart takes over as soon as you start working.

SVG, PNG, and Excel exports are generated locally in this browser. PowerPoint export is temporarily unavailable while its dependency path is reviewed for a high-severity image parser advisory.

Part-to-Whole Composition Mechanics

The color schemes explorer allows you to visually evaluate categorical, sequential, and diverging color palettes before applying them to your charts. It tests how distinct colors appear adjacent to one another and simulates color vision deficiencies (like deuteranopia and protanopia) to ensure WCAG accessibility compliance. All palette analysis and image processing happens entirely locally on your machine, ensuring complete privacy with no data or swatches uploaded to external servers.

Categorical Proportions & Table Structure

Format input columns for color schemes with explicit headers and numerical measurements. Verify that rows represent discrete categories or observations without unformatted symbol artifacts.

Sample Part-to-Whole Proportions

| Palette name | Type | Hex codes |

Segment Allocation Guidelines & Pitfalls

Ensure sufficient visual distinction for color schemes marks across standard and high-contrast viewports.
Align text labels horizontally whenever possible to improve cognitive readability for color schemes elements.
Double-check scale boundaries and zero-anchors before exporting color schemes presentation artwork.

Data shape: Category and numeric emphasis columns
Exports: SVG, PNG, and Excel data; PowerPoint export is temporarily unavailable pending dependency review.

How it works

You edit a table in this page. The renderer draws an SVG from those rows in your browser, then you can download SVG, PNG, or Excel data. The table is not uploaded to any external processing server.

Frequently asked questions

Why are perceptually uniform palettes (like Viridis or OKLCH) superior?

They ensure that equal numerical data steps produce equal perceived color differences in human vision, including for individuals with deuteranopia or protanopia.

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Reviewed 16 August 2026.