It's white on black, or at least white on very dark gray.
It's light grey (#666b67) on dark grey (#222623), not much contrast on desktop.
Mobile uses other colours, the same background (#222623) but a lighter font color (#B2B5B3), which is _way_ better.
Comments
It's white on black, or at least white on very dark gray. Contrast is about as high as it could be on my device.
Might there be a problem with your device?
It's light grey (#666b67) on dark grey (#222623), not much contrast on desktop. Mobile uses other colours, the same background (#222623) but a lighter font color (#B2B5B3), which is _way_ better.
Why not use the same foreground color on desktop?