The hex color #4D9C8F is a light color. The web-safe version is Hex
#669999. A complementary color is
#B26370. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#80CFC2, and Hex
#1A695C is the 20% darker color. If the color is saturated by 10%, you get
#489F91. If the color is desaturated by 10%, the color
#52998D is obtained.