The hex color #50B5A8 is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#AF4A57. The grayscale version is
#8F8F8F. A 20% lighter version of the original color is
#83E8DB, and Hex
#1D8275 is the 20% darker color. If the color is saturated by 10%, you get
#4AB9AB. If the color is desaturated by 10%, the color
#56B1A6 is obtained.