Hawaii ended its Health Connector program at the end of 2015. It now redirects to the federal website. HMSA and Kaiser are the two biggest insurance companies and together they have almost all of the market share. There's a third company there, but I believe they only run a handful of clinics, mostly on leeward.
Call those two companies directly and ask about HDHP plans (which are compatible with HSA's). They didn't list all of their available plans on the Exchange, each of them had over 150 plans with a variety of features back in 2013 when I was there. It's a bit of a PITA to get your Exchange plans approved through the state insurance department, so they kept those fairly limited in number.