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<blockquote>Is there any way I can get ColorDialog to present those custom colors? &nbsp;</blockquote>You can define the colors is using hexadecimal format. The first two digits represent a color’s blue&nbsp;component, the next two its green&nbsp;component, and the last two its red&nbsp;component. <pre><code class="code-10 nolinks" id="code-20-43311224-1">// Use light custom colors for the background dialog.
int[] bg_colors = {
&nbsp; &nbsp; 0xFFFFFF, 0xFFC0C0, 0xFFE0C0, 0xFFFFC0, 0xC0FFC0,
&nbsp; &nbsp; 0xC0FFFF, 0xC0C0FF, 0xFFC0FF, 0xE0E0E0, 0xFF8080,
&nbsp; &nbsp; 0xFFC080, 0xFFFF80, 0x80FF80, 0x80FFFF, 0x8080FF,
&nbsp; &nbsp; 0xFF80FF
};
dlgBgColor.CustomColors = bg_colors;
dlgBgColor.FullOpen = true;
dlgFgColor.FullOpen = false;
</code></pre>Note: If you set the dialog’s FullOpen property to true, the dialog shows its custom color selection area on the right when it opens. &nbsp; For more information: <a href="http://csharphelper.com/blog/2014/10/display-custom-colors-in-the-color-selection-dialog-in-c/#:~:text=The%20color%20selection%20dialog%20can,of%20integers%20representing%20the%20colors." rel="ugc">http://csharphelper.com/blog/2014/10/display-custom-colors-in-the-color-selection-dialog-in-c/#:~:text=The%20color%20selection%20dialog%20can,of%20integers%20representing%20the%20colors.</a>
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Developer

it_saige

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I understand the creation of my own custom colors. &nbsp;But I am not talking about my own custom colors. &nbsp;Select color in almost any Office program, and you get the basic colors and then a sliding scale of colors which amount to thousands of colors. &nbsp;I tried your solution to no effect. &nbsp; Here is the code I used: &nbsp; &nbsp; &nbsp; &nbsp; public static Color GetColor(Color init) { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Color color = init; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ColorDialog colorDlg = new ColorDialog { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; AllowFullOpen = false, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; AnyColor = true, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; FullOpen = true, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SolidColorOnly = false, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Color = color &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return colorDlg.ShowDialog() != DialogResult.Cancel ?&nbsp; colorDlg.Color : init; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; } 
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Retired

Stafford Martin

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<div class="content wysiwyg-content fr-view">
When I use Microsoft programs and display a color dialog, they show smooth bars of custom colors that are fine gradations of the major colors, in addition to the major colors. &nbsp;The ColorDialog class in .NET doesn't _appear_ to provide that option. &nbsp; Is there any way I can get ColorDialog to present those custom colors? &nbsp;If not, is there another object that will do so? 
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When I use Microsoft programs and display a color dialog, they show smooth bars of custom colors that are fine gradations of the major colors, in addition to the major colors.  The ColorDialog class in .NET doesn't _appear_ to provide that option.   Is there any way I can get ColorDialog to present those custom colors?  If not, is there another object that will do so?

Custom colors in ColorDialog

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).