If you are looking to create gradient backgrounds, check out this handy generator here
Check out the example code below showcasing how to use those colors:
/* IE10 Consumer Preview */
background-image: -ms-radial-gradient(center, circle farthest-corner, #A3CEF2 0%, #5D95CC 100%);
/* Mozilla Firefox */
background-image: -moz-radial-gradient(center, circle farthest-corner, #A3CEF2 0%, #5D95CC 100%);
/* Opera */
background-image: -o-radial-gradient(center, circle farthest-corner, #A3CEF2 0%, #5D95CC 100%);
/* Webkit (Safari/Chrome 10) */
background-image: -webkit-gradient(radial, center center, 0, center center, 506, color-stop(0, #A3CEF2), color-stop(1, #5D95CC));
/* Webkit (Chrome 11+) */
background-image: -webkit-radial-gradient(center, circle farthest-corner, #A3CEF2 0%, #5D95CC 100%);
/* W3C Markup, IE10 Release Preview */
background-image: radial-gradient(circle farthest-corner at center, #A3CEF2 0%, #5D95CC 100%);