The hex color #3e8cc4 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#C1733B. The grayscale version is
#858585. A 20% lighter version of the original color is
#71BFF7, and Hex
#0B5991 is the 20% darker color. If the color is saturated by 10%, you get
#378DCA. If the color is desaturated by 10%, the color
#458BBE is obtained.