Colour schemes for web and graphic design
You are a graphic designer, web, or interior designer and you want to pick several colors that go well together when designing a web page or painting a room at home. Here I used a small Linux application called AGAVE to illustrate how simple this is
Colour Schemes
Below you will see five colour schemes that are great for choosing anything from 2 to 4 colours for your scheme. There is an additional color scheme for monochromatic colours
Compliments
A complimentary colour scheme consists of two colours which are at opposite ends of the colour wheel:

Split Compliments
A split compliment consist of a base colour plus two other colours that are close to it's compliment:

Triads
A triad consists of a base colour plus two other colours that are equally spaced around the colour wheel:

Tetrads
A tetrad consists of a base colour plus three other colours equally spaced around the colour wheel:

Analogous colours
A three colour scheme consisting of a base colour and two others that are close to it on the colour wheel:

Monochromatic colour scheme
A three colour scheme consisting of a base colour and two others that have the same hue (colour) but which are different in saturation or value:

There are many online colour scheme generators which allow you to log in and then create and save colour schemes. This is a good option for anyone who works with colour but sometimes you need a good colour picking tool on your computer
For Windows users ColorPic is a great little color picker that allows you to create colour palettes and save them for later use. On Linux, Agave is a nice color picker and is what I used for this tutorial. Agave and Colorpick also have an eye-dropper tool that lets you pick colours from anywhere on your screen, even outside of the application window. This is cool for grabbing colours from web pages and photos into your palettes
Bon chance