From the Pearl Brite box
Turquoise Pearl was a Crayola crayon in the Pearl Brite set of 1997. Those 16 crayons had a soft pearly shine and came in black wrappers. The list of Crayola crayon colors gives Turquoise Pearl as #3BBCD0, a medium sea blue. Mystic also comes from a crayon in that box.
A paler code here
The turquoise pearl on this site is #89F5E3, a light mint aqua. It comes from an open list of color names online and does not match the crayon. It is much lighter and greener than the Crayola value. Compare it with turquoise and aquamarine.

