deutan

Simulate deuteranopia (green-blind) color vision — the color, or a whole image, as a deuteranopia viewer sees it. A typed shortcut over cvdsim: every call is cvdsim's with the deficiency fixed to deutan.

pip install deutan          # color only
pip install "deutan[image]" # + image recoloring

import deutan
deutan.simulate("#d7191c")            # that red as deuteranopia sees it
from PIL import Image
deutan.simulate_image(Image.open("chart.png")).save("chart-deutan.png")

• simulate(color, severity=1.0) → hex, as deuteranopia sees it.
• simulate_image(image, severity=1.0) → a recolored PIL Image (path or Image in).

Built on the published method: https://doi.org/10.5281/zenodo.21310578 · Screening/design aid, not a clinical tool.

Licence

MIT.