Harvard Extension School
CSCI E-12 Fundamentals of Web Site Development | Spring 2020

## Color Units

Wikipedia Web Colors

### Name

As defined in HTML: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, yellow

### RGB Color Space

256 colors in each channel (Red, Green, Blue). Values can be

- decimal numbers (0 to 255)
- hexadecimal numbers (00 to ff)
- percentages (0 to 100%)

The following are all equivalent ways of defining a shade of orange:

rgb(100%,66%,33%) rgb(255,168,84) #ffa854 |

Example 3.44 - Example 3.44

- Markup
- Display

    <div style="background-color: rgb(100%,66%,33%); padding: 1em; ; margin: 1em;">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.<br/>rgb(100%,66%,33%)</div><div style="background-color: #ffa854; padding: 1em; margin: 1em; ">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.<br/>#ffa854</div><div style="background-color: rgb(255,168,84); padding: 1em; ; margin: 1em;">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.<br/>rgb(255,168,84)</div>

Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
rgb(100%,66%,33%)
Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
#ffa854
Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
rgb(255,168,84)

Copyright © David Heitmeyer