I am trying to use jaro wrinkler similarity to check colors strings coming from user inputted form against a palette of fixed colors.

Using jaro wrinkler similarity, I get these kind of results for very short strings:

• s1 = "ed" - s2 = "red" -> similarity = 0
• s1 = "nude" - s2 = "red" -> similarity = 0.5833333134651184

Is it correct to get similarity = 0 in the first case?