I am comparing two sets of numbers and would like to format the cell if the
difference is within a certain range - as follows (where ABC and HIJ are the
columns, Length Width Height are in Row 1):

A B C
Length Width Height
12.9 11.0 4.0
7.3 7.0 4.8
23.5 3.5 3.5
12.8 11.0 6.0

H I J
Length Width Height
12.90 10.92 5.58
7.60 7.00 5.10
23.30 3.60 3.60
12.20 9.90 4.60

When the difference between H2 and A2 is .5 (positive or negative) I would
like to shade the cell in H, I, or J. In the above example, J2 would be
shaded, H2 and I2 would not and so on.

I'm not sure how to capture the variance.

Can this be acheived using conditional formatting?
Thanks in Advance!