Evaluate whether a HEX value is dark or light

Question

The user of the ASP.NET web app I\'m building can select colors for use on some of the elements (e.g. buttons/titles) to facilitate some degree of personalisation.

Answer 1

The methods to do this are built into .Net now:

    var hexcolor = "#FA3CD0";
    var color = System.Drawing.ColorTranslator.FromHtml(hexcolor);
    var brightness = color.GetBrightness();
    if (brightness > .5)
    {
        // color is light
    }
    else
    {
        // color is dark
    }