The hex color #83bcd5 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#7C432A. The grayscale version is
#B1B1B1. A 20% lighter version of the original color is
#B6EFFF, and Hex
#5089A2 is the 20% darker color. If the color is saturated by 10%, you get
#7EBDD9. If the color is desaturated by 10%, the color
#88BBD1 is obtained.