The hex color #2c57a2 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#D3A85D. The grayscale version is
#626262. A 20% lighter version of the original color is
#5F8AD5, and Hex
#00246F is the 20% darker color. If the color is saturated by 10%, you get
#2756A8. If the color is desaturated by 10%, the color
#31589C is obtained.