There are 96 words that start with 'blue'.
Note: These 96 words that start with 'blue' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with blueb, blues, bluej, blueg, bluep, bluet, bluec, bluel, bluen, bluef, bluew, bluei, blueh, bluey, blued, bluer.