The hex color #a9c5e5 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#563A1A. The grayscale version is
#C6C6C6. A 20% lighter version of the original color is
#DCF8FF, and Hex
#7692B2 is the 20% darker color. If the color is saturated by 10%, you get
#A6C5E8. If the color is desaturated by 10%, the color
#ACC5E2 is obtained.