We first present a design for two-dimensional (2D) spin-Hall photonic TIs with low refractive index contrast (as low as n=1.55 when contrasted with air), greatly expanding the range of available materials for fabricating photonic TIs, including polymers. Polymeric materials provide a number of advantages as media for topological photonics including (often) low absorption at visible wavelengths, straightforward doping of quantum emitters and gain materials into the topological lattice, application in flexible photonic devices, and especially, compatibility with rapid fabrication techniques such as additive manufacturing and soft lithography. Our design (Figure ) is an adaptation of the expanded honeycomb lattice of rods proposed by Wu and Hu, with the rod dimensions and degree of expansion carefully tuned to maintain a complete topological band gap with low index contrast. At a ratio a0/R equal to 3, where a0 is the lattice constant and R is the distance from the center of the unit cell to the center of a rod, the honeycomb lattice supports a Dirac point between bands 3 and 4. Decreasing a0/R opens the Dirac point into a topological band gap, while increasing the ratio yields a trivial bandgap.