The hex color #a9dae5 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#56251A. The grayscale version is
#CDCDCD. A 20% lighter version of the original color is
#DCFFFF, and Hex
#76A7B2 is the 20% darker color. If the color is saturated by 10%, you get
#A5DBE7. If the color is desaturated by 10%, the color
#ADD9E3 is obtained.