colorNotebook.md

WCAG contrast example

// Colors failing AA-large, failing AA, and meeting AA

let bg= new Color("Wheat");
let fg1 = new Color ("Bisque");
let fg2 = new Color ("DarkGoldenrod");
let fg3 = new Color ("Olive");
let fg4 = new Color ("Sienna");
let fg5 = new Color ("DarkGreen");
let fg6 = new Color ("Maroon");

bg.luminance;
fg1.luminance;
fg2.luminance;
fg3.luminance;
fg4.luminance;
fg5.luminance;
fg6.luminance;

bg.contrast(fg1);
bg.contrast(fg2);
// fg3 meets AA-large 3.0
bg.contrast(fg3);
bg.contrast(fg4);
// fg5 meets AA 4.5
bg.contrast(fg5);
bg.contrast(fg6);