The hex color #a9ecdf is a light color. The web-safe version is Hex
#99FFCC. A complementary color is
#561320. The grayscale version is
#D1D1D1. A 20% lighter version of the original color is
#DCFFFF, and Hex
#76B9AC is the 20% darker color. If the color is saturated by 10%, you get
#A5EFE0. If the color is desaturated by 10%, the color
#ADE9DE is obtained.