Good color combination for a Heading

Below heading is created using a Panel. It looks good on a normal white background (page's background I mean)


<asp:Panel ID="pReferralMethodHeader" runat="server" BackColor="#e7e7e7" Height="30px" ScrollBars="None">
<div style="padding: 5px; cursor: pointer; vertical-align: middle;">
<div style="float: left;" class="">
<font face="verdana" color="#993333" size="3"><b>Referral Method</b></font>
</div>
<div style="float: right; vertical-align: middle;">
<asp:ImageButton ID="imgReferralMethod" runat="server" ImageUrl="~/images/expand_blue.jpg"
AlternateText="(Show Claim Information Details...)" />
</div>
</div>
</asp:Panel>