Realising that different font sizes need to be in proportion to each other (e.g 3:4 or golden ratio) made the cake for me when I briefly studied typography a while back. This article touches it as well.
Although the article immediately loses points for proposing an absurdly precise ratio for font sizes based on a mathematical constant whose interesting properties are utterly irrelevant here.
What matters is that your range of sizes are visually equivalent or clearly distinct when you need them to be, and that the text looks good at each size in your chosen fonts. Generating a geometric scale of 7 or 8 different sizes by just multiplying some base value by a random ratio will not achieve those goals with any screen fonts I have ever worked with.
What matters is that your range of sizes are visually equivalent or clearly distinct when you need them to be, and that the text looks good at each size in your chosen fonts. Generating a geometric scale of 7 or 8 different sizes by just multiplying some base value by a random ratio will not achieve those goals with any screen fonts I have ever worked with.