Diode LED white high brightness

Hello good day... Query: I can connect to my Arduino Uno a diode white LED high brightness, with a permanent consumption of 20mA?. It is a Led 3.7v and consumption of 20mA, would put a resistance of 68ohms.

I know the arduino data sheet says that consumption enduring, but it gives me something scary ...

Someone tried it?

Sorry for my English

I can connect to my Arduino Uno a diode white LED high brightness, with a permanent consumption of 20mA?.

Yes.

It is a Led 3.7v and consumption of 20mA, would put a resistance of 68ohms.

Yes.