Horizon is a pretty, light sky blue.
In large swabs there is a hint of pink sheen.
Let's take a look at how the ink behaves on fountain pen friendly papers: Rhodia, Tomoe River, and Leuchtturm.
Dry time: 30 seconds
Water resistance: Low
Show through: Medium
On Staples 24 lb copy paper there was feathering and just a little bit of bleeding.
Overall, it's a nice light blue, but there isn't anything about it that stands out from the 100 blue inks I already have.
Disclaimer: A sample of this ink was provided by Pen Chalet for the purpose of this review. All photos and opinions are my own. This page does contain affiliate links, but is not sponsored in any way.