The hex color #a3c28d is a light color. The web-safe version is Hex
#99CC99. A complementary color is
#5C3D72. The grayscale version is
#A6A6A6. A 20% lighter version of the original color is
#D6F5C0, and Hex
#708F5A is the 20% darker color. If the color is saturated by 10%, you get
#A3C58B. If the color is desaturated by 10%, the color
#A3BF90 is obtained.