P5200 - 44.79% blue light is filtered  
P3000 - 57.86% blue light is filtered
P1000 - 91.48% blue light is filtered

Recommended usage:
P5200: Reading Lens
P3000: Computer Lens
P1000: Ski-goggle Lens

Melanin also can be added into other color base to provide the function. 

Check out more colors with us