The hex color #1a99e6 is a dark color. The web-safe version is Hex
#3399FF. A complementary color is
#E56619. The grayscale version is
#888888. A 20% lighter version of the original color is
#4DCCFF, and Hex
#0066B3 is the 20% darker color. If the color is saturated by 10%, you get
#0F9BEF. If the color is desaturated by 10%, the color
#2597DD is obtained.