The hex color #248AF1 is a dark color. The web-safe version is Hex
#3399FF. A complementary color is
#DB750E. The grayscale version is
#8A8A8A. A 20% lighter version of the original color is
#57BDFF, and Hex
#0057BE is the 20% darker color. If the color is saturated by 10%, you get
#1A8AFB. If the color is desaturated by 10%, the color
#2E8AE7 is obtained.