The hex color #a9a9c8 is a light color. The web-safe version is Hex
#9999CC. A complementary color is
#565637. The grayscale version is
#B3B3B3. A 20% lighter version of the original color is
#DCDCFB, and Hex
#767695 is the 20% darker color. If the color is saturated by 10%, you get
#A8A8CA. If the color is desaturated by 10%, the color
#AAAAC6 is obtained.