The hex color #a3e39e is a light color. The web-safe version is Hex
#99CC99. A complementary color is
#5C1C61. The grayscale version is
#B7B7B7. A 20% lighter version of the original color is
#D6FFD1, and Hex
#70B06B is the 20% darker color. If the color is saturated by 10%, you get
#A1E79C. If the color is desaturated by 10%, the color
#A5DFA0 is obtained.