The hex color #a3e3c9 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#5C1C36. The grayscale version is
#C5C5C5. A 20% lighter version of the original color is
#D6FFFC, and Hex
#70B096 is the 20% darker color. If the color is saturated by 10%, you get
#A0E6C9. If the color is desaturated by 10%, the color
#A6E0C9 is obtained.