The hex color #42a57a is a light color. The web-safe version is Hex
#339966. A complementary color is
#BD5A85. The grayscale version is
#767676. A 20% lighter version of the original color is
#75D8AD, and Hex
#0F7247 is the 20% darker color. If the color is saturated by 10%, you get
#3DAA7A. If the color is desaturated by 10%, the color
#47A07A is obtained.