The hex color #a990d3 is a light color. The web-safe version is Hex
#9999CC. A complementary color is
#566F2C. The grayscale version is
#AFAFAF. A 20% lighter version of the original color is
#DCC3FF, and Hex
#765DA0 is the 20% darker color. If the color is saturated by 10%, you get
#A88DD7. If the color is desaturated by 10%, the color
#AA93CF is obtained.