@jupyter/web-components/dist/esm/color/recipes/focus-stroke.js

A component library for building extensions in Jupyter frontends.

import { directionByIsDark } from '../utilities/direction-by-is-dark.js';
/** @internal */
export function focusStrokeOuter(palette, reference) {
    return palette.colorContrast(reference, 3.5);
}
/** @internal */
export function focusStrokeInner(palette, reference, focusColor) {
    return palette.colorContrast(focusColor, 3.5, palette.closestIndexOf(palette.source), (directionByIsDark(reference) * -1));
}