The hex color #2357dc is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#DCA823. The grayscale version is
#727272. A 20% lighter version of the original color is
#568AFF, and Hex
#0024A9 is the 20% darker color. If the color is saturated by 10%, you get
#1B54E7. If the color is desaturated by 10%, the color
#2B5AD1 is obtained.