An interesting fashion question! I have to think it through. To answer the opposite, what's safe is any shade of blue, any shade of grey, and black. Those always look great.

Next levels of safe are green, brown, red and pink, which often look good. (Bright red is amazing with my hair, but only good to wear if my face is clear, no good for an acne day. Brings the red spots right out.)

And then white / off-white, which I used to abhor but now wear in moderation.

So, dangerous is camel/beige colors, which wash me out and require full make-up to counteract, and brown/orange colors that might look warm on me or might make me look hideous. Also, anything too patterned or too bright. Tie-dye. Yellow and orangey-orange.