function meetsContrastGuidelines(color1, color2) {
    var contrastRatio = getContrast(color1, color2);
    return {
      AA: contrastRatio >= 4.5,
      AALarge: contrastRatio >= 3,
      AAA: contrastRatio >= 7,
      AAALarge: contrastRatio >= 4.5
    };
  }
Determines which contrast guidelines have been met for two colors.
Based on the [contrast calculations recommended by W3](https://www.w3.org/WAI/WCAG21/Understanding/contrast-enhanced.html).

@example
const scores = meetsContrastGuidelines('#444', '#fff');