Set color through color ASCII code

Question

if (e.Row.RowType == DataControlRowType.DataRow)

{

   string value = gvdetails.DataKeys[e.Row.RowIndex].Values[0].ToString();

   if (value == "abc")

   {   

   Color colour = ColorTranslator.FromHtml("#E7EFF2");

   e.Row.BackColor = colour; 

   //e.Row.ForeColor = System.Drawing.Color.White;

   }

} 

 

this code is not working.how to add ascii code (color code)  in c# code.