Fig: Blurred curve, disturbing background
In this picture you can see that the outline curve is unfortunately quite blurred.
The background color also bothers me.
But there is an easy way to correct this:
select the curve in Inkscape
select "Fill and Stroke" in the right-hand pane
select "Fill" in the tab bar
set "Blur" to 0 at the bottom
click on HSL in the color area
Pull L to 100
I would set A to 0
select Stroke paint in the tab bar at the top
Pull S and L to 0