The hex color #a9cfe3 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#56301C. The grayscale version is
#C9C9C9. A 20% lighter version of the original color is
#DCFFFF, and Hex
#769CB0 is the 20% darker color. If the color is saturated by 10%, you get
#A6D0E6. If the color is desaturated by 10%, the color
#ACCEE0 is obtained.