Convertir un TColor dans le format HTML

function ColorToHtml( Color: TColor ): string;
begin
Result := '#' + IntToHex( Color and $FF, 2 ) +
IntToHex( Color shr 8 and $FF, 2 ) +
IntToHex( Color shr 16 and $FF, 2 );
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
if ColorDialog1.Execute then
begin
Edit1.Text:=ColorToHtml(ColorDialog1.Color);
end;
end;