The hex color #40d0ff is a light color. The web-safe version is Hex
#33CCFF. A complementary color is
#BF2F00. The grayscale version is
#B0B0B0. A 20% lighter version of the original color is
#73FFFF, and Hex
#0D9DCC is the 20% darker color. If the color is saturated by 10%, you get
#35D3FF. If the color is desaturated by 10%, the color
#4BCDF7 is obtained.