The hex color #18daef is a light color. The web-safe version is Hex
#00CCFF. A complementary color is
#E72510. The grayscale version is
#A0A0A0. A 20% lighter version of the original color is
#4BFFFF, and Hex
#00A7BC is the 20% darker color. If the color is saturated by 10%, you get
#0AE0F7. If the color is desaturated by 10%, the color
#26D4E7 is obtained.