I understand that most sites recommend that at no time should a sub's limbs feel even the slightest bit numb or tingly during bondage, and if they do, a bond is too tight.

However, from my experience, I have found that the only times when I do not feel even the slightest bit numb/tingly is in very loose or relaxing bondage. Even a spread-eagled tie on the bed makes them feel a little numb. A simple hogtie, definitely. Elbows a few inches apart, definitely. That basically leaves me with either a simple hands-behind-back or with restraints so loose that I can easily wriggle out of them.

D and I use soft rope for our undertakings, he wraps it around a couple of times to prevent it from cutting into skin, or uses scarves. Can't afford nice leather cuffs I'm afraid. Besides, I'm sure lots of people just use rope... right?

Is it maybe okay for a tiny bit of tingling/numbness as long as it doesn't get to the point where you can't feel the limb or it starts to color up?