The hex color #a9c1c5 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#563E3A. The grayscale version is
#BABABA. A 20% lighter version of the original color is
#DCF4F8, and Hex
#768E92 is the 20% darker color. If the color is saturated by 10%, you get
#A7C2C6. If the color is desaturated by 10%, the color
#ABC0C4 is obtained.