Prepare your cocktail glasses by running a lime wedge along the rim of a tall cocktail glass, and then dip into the margarita salt.
To your blender, add 1 ounce tequila, 1 ounce lime juice, ½ ounce agave nectar, 1 ½ ounces blue curacao, and 1 ½ cups ice. Blend until smooth.
Divide evenly between the 3 cocktail glasses.
For the white layer, rinse your blender well and add 1 ounce triple sec, 1 ounce tequila, 1 ounce lime juice, 1 ½ ounces cream of coconut, and 1 ½ cups ice. Blend until smooth.
Gently spoon the white margarita mixture on top of the blue mixture.
For the red margarita layer, rinse your blender and then add 1 ounce triple sec, 1 ounce tequila, ½ ounce lime juice, ½ ounce agave, and 1 ½ cups frozen strawberries. Blend until smooth.
Gently spoon the red margarita mixture over top of the white layer.
Garnish each drink with fresh lime and enjoy!