The "official" limit for ILR is 180 days - it's not obvious from the forms, but if you search hard enough on the home office website, you will find it in an appendix to a guidance note meant for immigration officers that says "6 months"! Very obscure.
Anyway, 190 days shouldn't be too bad - I had a friend who was also 10 days over and she didn't have a problem.
So if you are at 190 days now - don't travel (if you can help it) before you apply. Also, if you are lucky (because this is discretionary for them) the immigration officer will not count time spent in other EU countries.
The only problem occurs if you are many days over - like myself - I was at about 250 days, and got turned down when I first applied. I had no clue about this limit, and even asked an immigration adviser who said everything would be OK. Imagine my shock and disappointment on the day. Anyway, they extended my work permit, and I reapplied successfully recently.
This is an important point. I am glad I didn't know about the 180 day limit, because if I did, I would have thought there was no point in my applying. But the trick is to apply anyway, and if there is some way they can help you qualify, my experience is that they will.