The hex color #83cbc3 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#7C343C. The grayscale version is
#B0B0B0. A 20% lighter version of the original color is
#B6FEF6, and Hex
#509890 is the 20% darker color. If the color is saturated by 10%, you get
#7ECEC5. If the color is desaturated by 10%, the color
#88C8C1 is obtained.