Can a 'chance to catch' percentage be calculated with the color of the circle?

There is a correlation between the circle color and the catch rate of the Pokemon. No specific numbers are known, but a user has calculated approximate percentages for color thresholds in this post on the Silph Road reddit:

The colors seem to work like this: if the capture rate (remember the formula from the beginning) is less than ≈ 65% the color is yellow. I wasn’t able to test the exact boundaries but my tests showed that around 65 was when the circle turned yellow. Likewise, at ≈ 35% the circle would turn orange. I only encountered a red circle once and the % was 21% so I wasn’t able to even get an approximate value there and I’m not going to assume anything for that with only 1 value in my data set.

---

This is more of an aside, but based on the information in this post, the circle color is directly related to level, in addition to species.