988625-How to set a hex color value for a cell?

Document-Processing/Excel/Excel-Library/NET/faqs/how-to-set-hex-color-value-to-the-cell.md

@@ -0,0 +1,102 @@
+---
+title: Set hex color in an Excel cell using XlsIO | Syncfusion 
+description: Learn how to apply a hex color to an Excel cell with the Syncfusion .NET Excel library (XlsIO). Convert a hex string to RGB and assign it to CellStyle.Color. 
+platform: document-processing
+control: XlsIO
+documentation: UG
+---
+
+# How to set a hex color value for a cell?
+
+XlsIO does not provide a direct API to assign a hex color string to a cell style. Convert the hex value to an RGB Color and then assign it to CellStyle.Color. The following example demonstrates this approach.
+
+{% tabs %}  
+{% highlight c# tabtitle="C# [Cross-platform]" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{               
+    IApplication application = excelEngine.Excel;                
+    IWorkbook workbook = application.Workbooks.Create(1);               
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    // Set hex color
+    worksheet["A1"].CellStyle.Color = HexToRgb("#FF0000");
+
+    workbook.SaveAs("HexColor.xlsx");
+    workbook.Close();
+    excelEngine.Dispose();
+}
+
+public static Color HexToRgb(string hexColor)
+{
+    hexColor = hexColor.TrimStart('#');
+    int hexValue = int.Parse(hexColor, System.Globalization.NumberStyles.HexNumber);
+    Color rgbColor = Color.FromArgb(
+        hexValue >> 16) & 0xFF,   // Red
+        hexValue >> 8) & 0xFF,    // Green
+        hexValue & 0xFF            // Blue
+    );
+
+    return rgbColor;
+}
+{% endhighlight %}
+
+{% highlight c# tabtitle="C# [Windows-specific]" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    IWorkbook workbook = application.Workbooks.Create(1);
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    // Set hex color
+    worksheet["A1"].CellStyle.Color = HexToRgb("#FF0000");
+
+    workbook.SaveAs("HexColor.xlsx");
+    workbook.Close();
+    excelEngine.Dispose();
+}
+
+public static Color HexToRgb(string hexColor)
+{
+    hexColor = hexColor.TrimStart('#');
+    int hexValue = int.Parse(hexColor, System.Globalization.NumberStyles.HexNumber);
+    Color rgbColor = Color.FromArgb(
+        (hexValue >> 16) & 0xFF,   // Red
+        (hexValue >> 8) & 0xFF,    // Green
+        hexValue & 0xFF            // Blue
+    );
+
+    return rgbColor;
+}
+{% endhighlight %}
+
+{% highlight vb.net tabtitle="VB.NET [Windows-specific]" %}
+Using excelEngine As New ExcelEngine()
+    Dim application As IApplication = excelEngine.Excel
+    Dim workbook As IWorkbook = application.Workbooks.Create(1)
+    Dim worksheet As IWorksheet = workbook.Worksheets(0)
+
+    ' Set hex color
+    worksheet("A1").CellStyle.Color = HexToRgb("#FF0000")
+
+    workbook.SaveAs("HexColor.xlsx")
+    workbook.Close()
+End Using
+
+Public Function HexToRgb(hexColor As String) As Color
+    hexColor = hexColor.TrimStart("#"c)
+    Dim hexValue As Integer = Integer.Parse(hexColor, NumberStyles.HexNumber, CultureInfo.InvariantCulture)
+    Dim rgbColor As Color = Color.FromArgb(
+        (hexValue >> 16) And &HFF,  ' Red
+        (hexValue >> 8) And &HFF,   ' Green
+        hexValue And &HFF           ' Blue
+    )
+    Return rgbColor
+End Function
+{% endhighlight %}
+{% endtabs %}  
+
+## See Also
+
+* [How to get the RGB color value for the applied cell color?](how-to-get-the-rgb-color-value-for-the-applied-cell-color)
+* [How to get RGB values of a cell’s background color?](how-to-get-rgb-values-of-a-cells-background-color)
+* [XlsIO support for cell background color transparency in Excel](does-xlsio-support-opacity-or-transparency-for-cell-background-colors-in-excel)