Is BLUES a Wordle Word?

Yes. BLUES is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

Plurals ending in S are almost never chosen as Wordle answers.

What does BLUES mean?

/bluːz/

The colour of the clear sky or the deep sea, between green and violet in the visible spectrum, and one of the primary additive colours for transmitted light; the colour obtained by subtracting red and green from white light using magenta and cyan filters; or any colour resembling this.
A blue dye or pigment.
Any of several processes to protect metal against rust.

16 more noun definitions

Blue clothing“The boys in blue marched to the pipers.”
(in the plural) A blue uniform. See blues.
A member of law enforcement
The sky, literally or figuratively.“His request for leave came out of the blue.”
The ocean; deep waters.
The far distance; a remote or distant place.
Anything blue, especially to distinguish it from similar objects differing only in color.
A dog or cat with a slaty gray coat.
One of the colour balls used in snooker, with a value of five points.
Any of the butterflies of the subfamily Polyommatinae in the family Lycaenidae, most of which have blue on their wings.
A bluefish.
An argument.
A liquid with an intense blue colour, added to a laundry wash to prevent yellowing of white clothes.
A type of firecracker.
A bluestocking.
One of the three color charges for quarks.

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: AverageIn the top 30% of all valid Wordle words for testing common letters.
Vowels: U, E
Unique letters: 5 of 5
Common letters: L, E

Hard-mode trap: 6 valid words fit the pattern _LUES. If you reach it, you may need several guesses to find the last letter.

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.