The hex color #a9ddf6 is a light color. The web-safe version is Hex
#99CCFF. A complementary color is
#562209. The grayscale version is
#D4D4D4. A 20% lighter version of the original color is
#DCFFFF, and Hex
#76AAC3 is the 20% darker color. If the color is saturated by 10%, you get
#A5DEF9. If the color is desaturated by 10%, the color
#ADDCF3 is obtained.