I think the font being thin at this resolution is fine, but it should be a pixel font without anti-aliasing. Also, the icon looks strange. I remember a pixel version of Tempy like this being used, though I can't remember where (maybe the favicon?) – and that version didn't look so oddly scaled down.
It's too thin, and could use some roundness OR boldness.
Try:
- Geometr (yes, like that)
- HP Simplified