You just reminded me that my app turned 18 a few months ago.

Another dev, Daniel Flück, extended the app to help color blind users: https://www.color-blindness.com/color-name-hue/

I am curious why in your example you compare indigo to violet and purple since purple has a major red component while indigo and violet are on the complete opposite end of the visible color spectrum and are single wavelength colors.

congrats!