The hex color #a9f3b3 is a light color. The web-safe version is Hex
#99FFCC. A complementary color is
#560C4C. The grayscale version is
#C5C5C5. A 20% lighter version of the original color is
#DCFFE6, and Hex
#76C080 is the 20% darker color. If the color is saturated by 10%, you get
#A6F8B1. If the color is desaturated by 10%, the color
#ACEEB5 is obtained.