Anthropic Visual Style

Use this skill when generating any visual output that should look Anthropic-branded: plots, charts, diagrams, slides, or web pages.

Quick Start (matplotlib — primary use case)

from anthro_colors import use_anthropic_defaults
use_anthropic_defaults()

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
# All plots now use Anthropic style automatically

This loads ~/.config/matplotlib/stylelib/anthropic.mplstyle which sets:

• White background (#FFFFFF)
• PRETTY_CYCLE colors (see references/colors.md)
• No top/right spines, clean typography
• 300 DPI saves with tight bbox

Domain-Specific References

Load the relevant reference for your output type:

Key Colors (quick reference)

Full palette with all 9 hue ramps (orange through red, 100-900 each) in references/colors.md.

Ground Truth

All color values come from lib/plotting/anthro_colors.py — that file is the single source of truth. If a hex code here conflicts with that file, the file wins.