Thank you, I might incorporate that into the README at some point!

When comparing them side by side, bluish purple is too similar to cyan.

The perceptual distance is the same between all colours according to the most recently available scientific data (with a relatively small margin of error for technical reasons).

There could be issues with your display calibration (most likely), things like f.lux/night shift and so on that cause these to deviate from the calculated ideal values.