The hex color #6b65df is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#949A20. The grayscale version is
#909090. A 20% lighter version of the original color is
#9E98FF, and Hex
#3832AC is the 20% darker color. If the color is saturated by 10%, you get
#6761E7. If the color is desaturated by 10%, the color
#6F69D7 is obtained.