The synth sounds seem to be composed mainly of basic waveforms. They are reminiscent of tons of electronic styles in house genres, but the drums and BPM bring it to a different place - I'd say it sounds beautifully downtempo.
Always good to hear sound design like that [o_o]
Might be wrong but maybe a saw/square combo detuned a little?
Or custom wavetables being modulated alongside a bitcrushed triangle wave?
or even a sawtooth with some bandpassed filtered white noise?