The hex color #a9c6b5 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#56394A. The grayscale version is
#B7B7B7. A 20% lighter version of the original color is
#DCF9E8, and Hex
#769382 is the 20% darker color. If the color is saturated by 10%, you get
#A8C8B5. If the color is desaturated by 10%, the color
#AAC4B5 is obtained.