The hex color #a3b6f9 is a light color. The web-safe version is Hex
#99CCFF. A complementary color is
#5C4906. The grayscale version is
#C6C6C6. A 20% lighter version of the original color is
#D6E9FF, and Hex
#7083C6 is the 20% darker color. If the color is saturated by 10%, you get
#A0B4FE. If the color is desaturated by 10%, the color
#A7B8F4 is obtained.