The hex color #99f28d is a light color. The web-safe version is Hex
#99FF99. A complementary color is
#660D72. The grayscale version is
#B3B3B3. A 20% lighter version of the original color is
#CCFFC0, and Hex
#66BF5A is the 20% darker color. If the color is saturated by 10%, you get
#96F889. If the color is desaturated by 10%, the color
#9CEC91 is obtained.