How do you print the key(s) of the largest value in a hash? I have a script that counts the occurences of something and the occurences it the value of that key.

Key -> Value
red -> 2
pink -> 1
orange -> 4
black -> 3
blue -> 4
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And I need it to determine the greatest value, sort by it and only print the highest keys/value. In this example the highest value is 4 shared by ORANGE and BLUE. I need it so it just prints these two hash elements.

Whether it's just one highest value or if X number share it, all the highest valued key/value pairs need to be sorted.

I am very confused at how to do this.