CSS color values is used to set the two type background color, foreground (borde-color,text-color etc.) to define a color value we some color format. You can determine your color values in different formats. Below is lists all of possible formats −
Short Hex Code
aqua, black, etc.
RGB % - RGB color value is the combination of RED GREEN and BLUE which is defined in percentage for example- Red color is defined as rgb(100%,50%,50%)
Hex Code - Thehexadecimal color code represents a color with 6 digit number. The first two digits(RR) represent a red value, the next two are a green value(GG), and the last are the blue value(BB). Every hexadecimal code is preceded by a pound or hash sign '#';
Example - for red we will use #FF0000
Short Hex Codes - This is the shorter form of Hex code, we use 3 digit number in this format
For red #F00
RGB - We define RBG (red, blue, green) value in a numeric format which can be an integer between 0 and 255 but some browsers does not support RGB() property.
keyword - In this format we just write a color name to define a color. like for red, red for green green