Affinity Designer CMYK Color Codes Don't Match

[Saltgrass Gypsy]

I'm having an issue with CMYK in Designer.  I have a color on one part of the design and want to duplicate it in another section.  The problem is that even though I enter the exact same color code, opacity and blend mode, the color is not the same as the original.  I tested this by duplicating the object with the correct color.  It duplicates perfectly, however when I re-typed the color code in the color picker, it literally changed to a slightly darker, less vibrant color.  I then duplicated the original object again and again the duplicate is exact to the original.  Anyone know what can be causing this?

I've attached a screenshot.  It's not a glaring difference and might be hard to see in the screenshot but is definitely not as vibrant and is noticeable in a design.

1 = Original

2 = Duplicate of original with retyping the color code in color picker (slightly darker, more muted color)

3 = Duplicate of original without retyping color code (same as original)

I know I can just use the eyedropper to duplicate the color but I shouldn't have to do that, especially an issue if I want to use the same color on a different project.  Also, when I use the eyedropper, it changes to the more vibrant color but the color codes are exactly the same so I just really don't understand what's going on.

 

[Old Bruce]

Is this a case of having an RGB document and you are wanting to use CMYK colours? 

[Saltgrass Gypsy]

It happens whether the color format in the document setup is RGB or CMYK.  To clarify, the object color I'm trying to duplicate was actually created by me in the same project, so it isn't an issue of format differences between projects.

[Saltgrass Gypsy]

Here's another example with green this time.  

1 = Top band color code

2 = Bottom band, same color code and settings typed in, different color

3 = Bottom band after using the eyedropper from the top band color, same color codes but now matches top band color

 

[lacerto]

Obsolete.