The hex color #66c08c is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#993F73. The grayscale version is
#919191. A 20% lighter version of the original color is
#99F3BF, and Hex
#338D59 is the 20% darker color. If the color is saturated by 10%, you get
#62C58C. If the color is desaturated by 10%, the color
#6ABB8C is obtained.