The hex color #1f90b0 is a dark color. The web-safe version is Hex
#339999. A complementary color is
#E06F4F. The grayscale version is
#757575. A 20% lighter version of the original color is
#52C3E3, and Hex
#005D7D is the 20% darker color. If the color is saturated by 10%, you get
#1693B6. If the color is desaturated by 10%, the color
#288DAA is obtained.