The hex color #257afc is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#DA8503. The grayscale version is
#898989. A 20% lighter version of the original color is
#58ADFF, and Hex
#0047C9 is the 20% darker color. If the color is saturated by 10%, you get
#1B79FF. If the color is desaturated by 10%, the color
#2F7CF1 is obtained.