I would like to reduce the opacity of the filling colour of an object/path and keep the stroke of such object/path unchanged.
Is there a way of impeding this relationship so I can only reduce the opacity of one?
Graphic Design Stack Exchange is a question and answer site for Graphic Design professionals, students, and enthusiasts. It only takes a minute to sign up.
Sign up to join this communityColor selector has alpha slider. In the next image both circles have black stroke and cyan fill. The rightmost circle has 50% transparent fill color (alpha=128)
Unfortunately there's a thing you maybe didn't expect. The stroke is half-way covered by the fill and the covered half become visible.
A fast workaround is to have 2 separate shapes (=edge & the fill) or to make a white stroke + grey fill copy on the top and use it as opacity mask. An example:
The opacity mask is set by selecting both layered objects and applying Object > Mask > Set
The 2 shape approach needs the stroke as a filled area which has a hole. It can be made easily by subtracting the fill area from the stroke which is converted to path. I do not recommend it because exactly fitting seam has 1 pixel wide transparent zone which needs a narrow stroke to be covered => more complex that the opacity mask version and not easily editable.
change the alpha value in the Fill submenu on the Fill and Stroke tab.