The hex color #11a1ef is a dark color. The web-safe version is Hex
#0099FF. A complementary color is
#EE5E10. The grayscale version is
#8B8B8B. A 20% lighter version of the original color is
#44D4FF, and Hex
#006EBC is the 20% darker color. If the color is saturated by 10%, you get
#05A3F9. If the color is desaturated by 10%, the color
#1D9FE5 is obtained.