The hex color #1a99e7 is a dark color. The web-safe version is Hex
#3399FF. A complementary color is
#E56618. The grayscale version is
#898989. A 20% lighter version of the original color is
#4DCCFF, and Hex
#0066B4 is the 20% darker color. If the color is saturated by 10%, you get
#0F9BF0. If the color is desaturated by 10%, the color
#2597DE is obtained.