The hex color #4191cc is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#BE6E33. The grayscale version is
#8A8A8A. A 20% lighter version of the original color is
#74C4FF, and Hex
#0E5E99 is the 20% darker color. If the color is saturated by 10%, you get
#3A92D3. If the color is desaturated by 10%, the color
#4890C5 is obtained.