  We study the QCD color interactions between static two heavy quarks at zero
temperature in a quenched SU(3) lattice gauge simulation: in addition to the
standard singlet $q\bar{q}$ potentials, we calculate octet $q\bar{q}$
potentials, symmetric and antisymmetric $qq$ potentials. It is shown that the
antisymmetric $qq$ channel behaves as a linearly rising potential at large
quark separations. We further find that the $q\bar{q}$ octet and $qq$ symmetric
channels have the complex dependence on the distance; at short distances they
are repulsive forces, while at large distances, they show linearly rising
feature. Ratio of string tensions between $q\bar{q}$ singlet and $qq$
antisymmetric potentials is described in terms of the Casimir factor.
