The hex color #a66ab3 is a light color. The web-safe version is Hex
#9966CC. A complementary color is
#59954C. The grayscale version is
#969696. A 20% lighter version of the original color is
#D99DE6, and Hex
#733780 is the 20% darker color. If the color is saturated by 10%, you get
#A866B6. If the color is desaturated by 10%, the color
#A46EB0 is obtained.