Depends on the day, the mood and what happens to me. I visualize different colors for different things.
People's names, different words, sounds, feelings, and whichever one stands out to me, seems to stick with me.
It commonly relates to things I've experienced that day. For example, if I hear a song that stands out to me, the color I feel sticks with me and I remember that feeling through that color.
I seem to have an affinity to light blue shades lately.