  Pull is a jet observable that is sensitive to color flow between dipoles. It
has seen wide use for discrimination of particles with similar decay topologies
but carrying different color representations and has been measured on W bosons
from top quark decays by the D$\emptyset$ and ATLAS experiments. In this paper,
we present the first theoretical predictions of pull, focusing on a
color-singlet decaying in two jets. The pull angle observable is particularly
sensitive to color flow, but is not infrared and collinear safe and so cannot
be calculated in fixed-order perturbation theory. Nevertheless, all-orders
resummation renders its distribution finite, a property referred to as Sudakov
safety. In our prediction of the pull angle we also include an estimation of
the effects from hadronization, and directly compare our results to simulation
and experimental data.
