The hex color #4b03bd is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#B4FC42. The grayscale version is
#595959. A 20% lighter version of the original color is
#7E36F0, and Hex
#18008A is the 20% darker color. If the color is saturated by 10%, you get
#4A00C7. If the color is desaturated by 10%, the color
#4C0CB3 is obtained.