It depends on who you talk to!
In general these values are considered "normal" to "optimal".
HDL greater than 40 mg/dL
LDL less than 120 mg/dL
Triglycerides less than 150 mg/dL
High Density Lipoproteins
(HDL) are the "good" cholesterol. It acts as the "bus" to transport LDLs out of your system. The higher the value the better.
Low Density Lipoproteins
(LDL) are the "bad" cholesterol linked to heart and cardiovascular diseases. The lower the value the better. Recent revisions have suggested that LDL should really be below 100 mg/dL
are a sort of free floating fat in your blood. High levels of TGs and low levels of HDL are often an indicator of insulin resistance and pre-diabetes.
Total Cholesterol numbers are calculated as: HDL + LDL + (20% of TGs)
Here is an article from the American Heart Association: What Are Healthy Levels of Cholesterol