The hex color #a9f9a9 is a light color. The web-safe version is Hex
#99FF99. A complementary color is
#560656. The grayscale version is
#C4C4C4. A 20% lighter version of the original color is
#DCFFDC, and Hex
#76C676 is the 20% darker color. If the color is saturated by 10%, you get
#A6FEA6. If the color is desaturated by 10%, the color
#ACF4AC is obtained.