The hex color #a9fdd9 is a light color. The web-safe version is Hex
#99FFCC. A complementary color is
#560226. The grayscale version is
#D5D5D5. A 20% lighter version of the original color is
#DCFFFF, and Hex
#76CAA6 is the 20% darker color. If the color is saturated by 10%, you get
#A5FFD9. If the color is desaturated by 10%, the color
#ADF9D9 is obtained.