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A and ∝ in the Info panel

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That's the alpha channel value. 


0 = fully transparent
127 = Half transparent
255 = fully opaque


In LAB/HSL/Greyscale:
0% = fully transparent
49%  = Half transparent
100% =  fully opaque


To see it for yourself:

1) Open a new document
2) Go to Document > Transparent Background (to toggle background to transparent)
3) Use the Rectangle Tool to drag a rectangle on the canvas
4) As you change the layer opacity of the rectangle, the Alpha value in the Info Pane will change accordingly



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49%  = Half transparent


Half transparent should be 50%. You've been shortchanged: ask for your money back! :lol:

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Affinity Designer/Photo/Publisher for Windows • Windows 10 Home (4th gen Core i3 CPU)
Affinity Photo for iPad 1.8.6 • Designer for iPad 1.8.6 • iPadOS 14.3 (iPad Air 2)

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