CIE XYZ


### Still a Standard of color space until now
red negative become positive
This is canonical color space to describe [SPD](https://texonom.com/spd-9383bcdb7298401ba6d104666c1e18a5) and then find it’s mapping into sum of each color cell’s integral
![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fbabda67c-eb20-4d0a-af75-32814e81e197%2FUntitled.png?table=block&id=06b69840-a467-4833-9cb1-516b217cf4ce&cache=v2)


### CIE XYZ 3D Plot
considered device independent so Devices can find mappings of their mdevice specific values to corresponding CIE XYZ values. This provides a canonical space to match between devices



All human use this Color standard but
CIE XYZ is based on 17 British Standard Observers
10 by Wright, 7 by Guild






