HTML

There are a few web sites which have had quite a bit of work done to them to make available colour selections.

I think paletton is probably my favorite. They have a two part selector choosing a colour once choosing a variant of: a) monochromatic, b) adjacent 3 colour, c) triad 3 colour, d) tetrad 4 colour, or e) free style with 4 colour. Once chosen, you can emit the colour selection as html, css, sas, text, or a couple of other styles.

Next up is the Adobe Color CC. It has variants of analogous, monochromatic, triad, complementary, compound, shades, and custom.

A few other choosers:

• Colors on the Web Color Wizard
• HTML Color Picker from w3schools
• Color Emotion Guide using a chart of existing logos
• csscolors.io - added here 2019/0/3/06, I think similar to others, just different presentation
• Colour Hunt linked from Hacker News

To present my code and command snippets, I should be using <code>...</code> rather than <pre>...</pre> enclosures. But since the 'pre' enclosure gets things closer to what I want in the first place, force of habit has kept me there, rather than using the more correct 'code' enclosure.

Anyway, to get decent looking monospaced fonts into my 'pre' enclosures, the following CSS snippet offers an ordered sequence of fonts to try:

pre {
  font-family: "Lucida Console", "Andale Mono", "OCR A Extended", "Fixedsys",
                   "Terminal", "Courier", 'Courier New', monospace;
  font-size: 110%;
}

The above is the result of a long list of comments at Bytes IT.

There were also some references to structured text recommendations:

• www.w3.org
• www.codestyle.org