I have been trained to prefer off-white... So I find that grey or brown somewhat offensive and think off-white is actually better for light and everything... Even when my choice is as non-personal.

Is that like greige ?

https://www.thespruce.com/greige-best-neutral-color-ever-797...

The problem with grey is that it's blue-ish and therefore feels dark and cold.

greige fixes that.

I have a lot of beige in my house. If I didn't want to go that warm, I could definitely see some take on greige as an alternative to colder gray.

What I find really interesting is that women can see shades that men cannot. My wife painted several shades of grey on the wall, including "agreeable gray" and I could not tell the difference, all looked the same. I experienced the same thing when she was looking for a grey / green for the kitchen cabinets. I could not tell the difference and all looked grey. She was also able to see shades of blue where all I saw was grey.

I have asked around and I am not the only male in my acquaintances that experiences this.

I got a perfect score (0) relatively quickly. I do suspect this phenomenon (which i've also experienced regarding fashion) comes from something other than actual visual perception though. Something like a combination of different aesthetic preferences and what one deems important vs what one deems unimportant in interior design

I got close to perfect which is odd as I have a hard time with hues in real life

Like when you look at new builds.

You have builder grey, builder white, builder off white, and builder beige.