Hypochromic or normochromic is decided by MCH or MCHC?

Erythrocytes containing the normal amount of hemoglobin (normal MCHC) are called normochromic.

When the MCHC is abnormally low they are called hypochromic, and when the MCHC is abnormally high, hyperchromic.

The terms above are used together to describe different forms of anemia