The hex color #1b9ad5 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#E4652A. The grayscale version is
#838383. A 20% lighter version of the original color is
#4ECDFF, and Hex
#0067A2 is the 20% darker color. If the color is saturated by 10%, you get
#119CDD. If the color is desaturated by 10%, the color
#2598CD is obtained.