The hex color #a166ef is a light color. The web-safe version is Hex
#9966FF. A complementary color is
#5E9910. The grayscale version is
#A7A7A7. A 20% lighter version of the original color is
#D499FF, and Hex
#6E33BC is the 20% darker color. If the color is saturated by 10%, you get
#A05FF6. If the color is desaturated by 10%, the color
#A26DE8 is obtained.