The hex color #83c3d5 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#7C3C2A. The grayscale version is
#B4B4B4. A 20% lighter version of the original color is
#B6F6FF, and Hex
#5090A2 is the 20% darker color. If the color is saturated by 10%, you get
#7EC5D8. If the color is desaturated by 10%, the color
#88C1D2 is obtained.