nealmckee/penumbra resource

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1422 stars · 32 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Penumbra is a mathematically balanced color scheme built in a perceptually uniform color space, providing light and dark themes plus high-contrast variants. It ships color values as TSV data and swatches, with accent palettes suitable for encoding quantitative information in data visualizations.

Use cases

• find a color theme for my code editor
• get a perceptually uniform color palette for data visualization
• need a dark and light theme with balanced contrast
• colors for a chart with accessible contrast levels
• high contrast theme for visual impairment
• export color values as rgb hex and hsl

When to choose

• you want a scientifically designed theme with controlled luminance, chroma, and hue
• you need accent palettes for encoding quantitative data
• you need enhanced-contrast variants for mild visual impairments

When to avoid

• you need a theme for a specific editor distributed as a plugin rather than raw color values
• you require WCAG color-vision-deficiency-safe palettes, which this scheme is explicitly unsuitable for

Facets

dataset · maturity maintenance

theme data-visualization accessibility web-design data-visualization accessibility cross-platform color-scheme editor-theme oklab perceptually-uniform julia dark-theme light-theme

Member repositories

For agents

markdown · JSON · MCP: product_card(name="nealmckee/penumbra")