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Color keyword definitions

From: CSS: Core Concepts

Video: Color keyword definitions

In this chapter we're going to go a little deeper into defining color with CSS. We'll start out by discussing the different color modes you can use and then move on to dealing with opacity and taking advantage some of the newer capabilities in CSS like defining CSS-based gradients. In this movie I want to talk about using color keyword definitions. Although we have used them throughout this title, we haven't really clearly defined which keywords are acceptable and where you can go to find the complete list. Speaking of that here I am at the CSS Color Module Level 3.

Color keyword definitions

In this chapter we're going to go a little deeper into defining color with CSS. We'll start out by discussing the different color modes you can use and then move on to dealing with opacity and taking advantage some of the newer capabilities in CSS like defining CSS-based gradients. In this movie I want to talk about using color keyword definitions. Although we have used them throughout this title, we haven't really clearly defined which keywords are acceptable and where you can go to find the complete list. Speaking of that here I am at the CSS Color Module Level 3.

You can find this at w3.org/TR/css3- color, and if I scroll down into the Table of Contents I can see that one of the first items here is the Basic color keywords. If I click on that I get a list of 16 color keywords that have been around in CSS for ever and a day starting out with black going all the way down to aqua. Not only does it show you a visual representation of the color itself you're also given hexadecimal values which we're going to talk about in just a moment, and also RGB values for this as well which they call decimal.

Now there is a second set of colors as well that has recently been added to the color specification. Now if I go back to the TOC, I can see that I have these extended color keywords and if I click on this, these are around 140 extra color-keywords that have actually been around for quite some time. They've just come from the SVG 1.0 specification. And if I scroll through these I can see that they start with names like aliceblue, blanchedalmond, and go all the way down through yellowgreen.

Now some of these are duplicates. For example, here you're going to find olive and you'll also find gray and things like that too. But once again we have a visual representation of the color, the hexadecimal notation, and the RGB values for that color as well. So now that we know a little bit more about these color keywords and know where to find them, let's go into one of our exercise files and start using them. So here I'm in the color-keywords.htm file. You can find this in the 06_01 directory. We will obviously will be working out of the Chapter 6 folder for these lessons.

And if I scroll down through the code, I can see again we have some pretty basic structure here. We have a heading one followed by a paragraph and in that paragraph we have a link and I provided you with a link that takes you directly to the color specification that we were just looking at. Now I want to set color for both the paragraph and the link, and I'll use color-keywords to do this. So I'm going to go right up here to my link selector and my paragraph selector and I'm just going to start off with the link, and we're going to use the color foreground property. So I'm just going to use color and let's try some of the basic keywords for us.

So I'm just going to use black for the link and then for paragraph I'm going to set color to gray. If I save this and preview this in one of my browsers I need to see the color being supported. So there is black and there's gray. Now that's hardly exciting so let's go and use some of the more nontraditional ones. How about maroon and olive? Now when you're choosing colors obviously one of the things you want to think about is do those colors work well together.

Obviously, contrast is important, whether the colors are complementary with each other is important, and in the case of styling links like we're doing here, if you're going to remove that underline you really have to give the user some idea that this text stands out, it's worth hovering over, it's worth clicking on. Obviously, we can do a little bit more of that with a hover definition, but you want to make sure that that link really sort of speaks to people in terms of, hey, I am different, I am clickable. Let's just try a couple more here and let's try something like fuchsia. So I love fuchsia.

I wish more people used it. If I save this and test it, oh my, well maybe that's why more people don't use it. Actually, one of the things about these extended color keywords is they do have some pretty cool colors. For example, I want to go ahead here in the link selector and I'm going to do saddlebrown, all one word. Now Aptana is not getting like that, but it's just going to have to learn to deal with it. Below that I'm going to use slategrey for the paragraph.

If I save that and test it you can see we have a totally different look and feel to this. We have sort of brownish color for our links, sort of a nice unsaturated blue color there for our body copy. One of the things I want to remind you about styling links is that in some browsers the visited links color can actually overwrite this color. So a lot of times when I'm styling a link at the very least I'll do this with it, I'll do a:link, a:visited { to make that the links are getting consistent styling all the way throughout their states. So I'm just going to go ahead and save that.

Now using these reserve color- keywords can save a little bit of time. They're a lot easier to remember, for example, than the hexadecimal notation and some of the other notations that we're going to play around in just a moment, but you still have to understand which color values are going to be used by the browser when rendering them. So make you have the specification handy to make sure that the color that you want is the color that you'd actually get.

Show transcript

This video is part of

Image for CSS: Core Concepts
CSS: Core Concepts

81 video lessons · 40756 viewers

James Williamson
Author

 
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  1. 4m 57s
    1. Welcome
      55s
    2. Using the exercise files
      4m 2s
  2. 1h 7m
    1. Exploring default styling
      4m 56s
    2. CSS authoring tools
      2m 29s
    3. CSS syntax
      4m 45s
    4. Writing a selector
      4m 10s
    5. Setting properties
      8m 40s
    6. Common units of measurement
      7m 47s
    7. Inline styles
      5m 1s
    8. Embedded styles
      5m 19s
    9. Using external style sheets
      10m 34s
    10. Checking for browser support
      8m 48s
    11. Dealing with browser inconsistencies
      5m 30s
  3. 2h 15m
    1. Structuring HTML correctly
      2m 51s
    2. Element selectors
      4m 52s
    3. Class selectors
      6m 4s
    4. ID selectors
      3m 27s
    5. Using classes and IDs
      10m 7s
    6. Element-specific selectors
      4m 35s
    7. The universal selector
      5m 42s
    8. Grouping selectors
      4m 49s
    9. Descendent selectors
      7m 32s
    10. Child selectors
      5m 7s
    11. Adjacent selectors
      5m 30s
    12. Attribute selectors
      12m 43s
    13. Pseudo-class selectors
      3m 54s
    14. Dynamic pseudo-class selectors
      8m 29s
    15. Structural pseudo-class selectors
      6m 45s
    16. Nth-child selectors
      13m 10s
    17. Pseudo-element selectors
      12m 40s
    18. Targeting page content: Lab
      8m 56s
    19. Targeting page content: Solution
      7m 59s
  4. 42m 39s
    1. What happens when styles conflict?
      4m 0s
    2. Understanding the cascade
      5m 47s
    3. Using inheritance
      6m 11s
    4. Selector specificity
      6m 55s
    5. The !important declaration
      4m 5s
    6. Reducing conflicts through planning
      3m 33s
    7. Resolving conflicts: Lab
      6m 45s
    8. Resolving conflicts: Solution
      5m 23s
  5. 1h 47m
    1. Setting a font family
      7m 10s
    2. Using @font-face
      9m 18s
    3. Setting font size
      7m 35s
    4. Font style and font weight
      6m 52s
    5. Transforming text
      3m 58s
    6. Using text variants
      2m 49s
    7. Text decoration options
      4m 26s
    8. Setting text color
      3m 2s
    9. Writing font shorthand notation
      8m 49s
    10. Controlling text alignment
      6m 33s
    11. Letter and word spacing
      9m 11s
    12. Indenting text
      4m 30s
    13. Adjusting paragraph line height
      10m 30s
    14. Controlling the space between elements
      6m 41s
    15. Basic text formatting: Lab
      8m 45s
    16. Basic text formatting: Solution
      7m 14s
  6. 2h 1m
    1. Understanding the box model
      16m 53s
    2. Controlling element spacing
      14m 29s
    3. Controlling interior spacing
      10m 49s
    4. Margin and padding shorthand notation
      6m 27s
    5. Adding borders
      8m 57s
    6. Defining element size
      10m 7s
    7. Creating rounded corners
      6m 58s
    8. Background properties
      2m 51s
    9. Using background images
      5m 10s
    10. Controlling image positioning
      10m 25s
    11. Using multiple backgrounds
      7m 5s
    12. Background shorthand notation
      5m 25s
    13. Styling container elements: Lab
      7m 55s
    14. Styling container elements: Solution
      8m 17s
  7. 47m 51s
    1. Color keyword definitions
      5m 4s
    2. Understanding hexadecimal notation
      6m 5s
    3. Using RGB values
      4m 58s
    4. Using HSL values
      5m 17s
    5. Working with opacity
      2m 23s
    6. Using RGBa and HSLa
      3m 8s
    7. Styling drop shadows
      5m 38s
    8. CSS gradients
      6m 32s
    9. Working with color: Lab
      4m 26s
    10. Working with color: Solution
      4m 20s
  8. 1m 58s
    1. Additional resources
      1m 58s

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