Can I wear contacts that are not my exact prescription, but similar?

Can I wear contacts that are not my exact prescription, but similar?
Added (1). my prescription is the same in both eyes and I have astigmatism

Power: -2.75 CYL: -1.25 AXIS: 180 Base Curve: 8.7 Diameter: 14.5

I'm looking for lenses for Halloween, just to wear for a couple hours for a costume contest. It's impossible to get astigmatism lenses, so I found some that seem close and was wondering if it's "ok" to wear them for a few hours. Here's the prescription for them

Power: -2.75 Base Curve: 8.6 Diameter: 14.5

Any help would be great! I'm going crazy!

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