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navbuddy

0.4.0
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Advanced configurable navigation component for Phoenix LiveView with native DaisyUI integration, Tailwind CSS support, permissions filtering, dropdowns, mega menus, and modern responsive design. Optimized for Phoenix 1.8+ and LiveView 1.1+.

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navbuddy assets node_modules culori src wcag.js
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assets/node_modules/culori/src/wcag.js 

import converter from './converter.js';



/*

	WCAG luminance

	References: 



	https://en.wikipedia.org/wiki/Relative_luminance

	https://github.com/w3c/wcag/issues/236#issuecomment-379526596

 */

export function luminance(color) {

	let c = converter('lrgb')(color);

	return 0.2126 * c.r + 0.7152 * c.g + 0.0722 * c.b;

}



/*

	WCAG contrast

 */

export function contrast(a, b) {

	let L1 = luminance(a);

	let L2 = luminance(b);

	return (Math.max(L1, L2) + 0.05) / (Math.min(L1, L2) + 0.05);

}