The hex color #a9c8b9 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#563746. The grayscale version is
#B9B9B9. A 20% lighter version of the original color is
#DCFBEC, and Hex
#769586 is the 20% darker color. If the color is saturated by 10%, you get
#A7CAB9. If the color is desaturated by 10%, the color
#ABC6B9 is obtained.