This lesson will help you understand what are CSS colors and its different types and how to use them.
Example of Named colour: brown, white, grey, black, olive, aqua, aliceblue etc
Full list of Named Colour: https://developer.mozilla.org/en-US/docs/Web/CSS/named-color.
RGB colour model define the colour in Red, Green and Blue colour components with each colour value ranging from 0 to 255.
Use the RGB Calculator by w3school: https://www.w3schools.com/colors/colors_rgb.asp
The last value “A” in the RGBA colour model is Alpha which defines the transparency level. The value 0 means full transparency and 1 means full opaque.
The Hexadecimal Model describes the colour using its primary colour components (red, green, blue) written as hexadecimal numbers.
Read more about Hex Colour Model in Mozilla Hex Color doc.
The HSL Model describes the colour according to Hue, Saturation and Lightness components.
Use the following HSL Calculator by w3school: https://www.w3schools.com/colors/colors_hsl.asp