Blue fletching easy to see?

[AG8]

As mentioned above, deer/elk are dichromatic, meaning they only pick up on shades of blue and yellow (besides black/white/grey). Blue in particular though, they perceive anywhere from 20 to 1000x brighter/better than human vision (wow!). Therefore, blue should always be avoided if you are concerned with animals spotting things like fletching

 

[dreamingWest]

The most visible arrow to my eyes has been: yellow wrap, orange vanes, green nock (lighted is obviously better).

I've not tried pink. They may be a good sub for orange vanes.