Everything You Need to Know about CSS3 Color Techniques

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CSS3 is revolutionizing Web by introducing a number of totally amazing elements and attributes that push modern web development a little bit forward. Many features are already supported to some extent in latest versions of the modern web browsers such as Chrome, Firefox, Safari, and Opera.

In this article we will talk about CSS3 colour techniques such as RGB / RGBA and HSL / HSLA color models, opacity, linear and radial gradients, box and text shadows as well as show you some examples of excellent implementation of the CSS3 colour techniques in practice. You will get some hints as to the new markup, understand how to incorporate new CSS3 elements, embrace the new creative freedoms of CSS3 and start using powerful and absolutely awesome CSS3 colour techniques today!

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Newest Design Trends with Popular CSS3 Techniques
How To Develop CSS3 Border Radius Tool
7 Useful CSS3 Code Generators
Best Examples of CSS3 Navigations and Menu Tutorials

Colors in CSS3

Resources: SlideShare Presentation: Colors in CSS3 by Lea Verou

W3C CSS3 Color Specification

W3C CSS3 Color Specification (working draft, 21 July 2008) describes color values and properties for foreground color and group opacity in CSS3 color module.

w3c specification Everything You Need to Know about CSS3 Color Techniques

W3C: CSS3 Color Modul

CSS3 Color Names

CSS3 supports 147 different colors by name (the 17 standard colors plus 130 more). This lists them all, along with their RGB and hexadecimal values.

color names Everything You Need to Know about CSS3 Color Techniques

CodeNique: CSS3 Color Names

Color Models, Opacity

RGB & RGBA

The RGB declaration sets color/colour using Red (R), Green (G) and Blue (B) color model. Alpha (A) allows us to specify a level of opacity for a color. An element with opacity/alpha value of 1.0 is fully visible (opaque) while an element with opacity value 0.0 is completely invisible.

rgb example Everything You Need to Know about CSS3 Color Techniques

div.L1 { background:rgb(60, 80, 100); height:20px; }
div.L2 { background:rgb(60, 100, 100); height:20px; }
div.L3 { background:rgb(60, 120, 100); height:20px; }
<br />
div.L4 { background:rgb(25, 50, 100); height:20px; }
div.L5 { background:rgb(25, 50, 150); height:20px; }
div.L6 { background:rgb(25, 50, 200); height:20px; }

rgba example Everything You Need to Know about CSS3 Color Techniques

div.L1 { background:rgba(153, 134, 117, 0.2); height:20px; }
div.L2 { background:rgba(153, 134, 117, 0.4); height:20px; }
div.L3 { background:rgba(153, 134, 117, 0.6); height:20px; }
div.L4 { background:rgba(153, 134, 117, 0.8); height:20px; }
div.L5 { background:rgba(153, 134, 117, 1.0); height:20px; }

HSL & HSLA

The HSL declaration sets color/colour using Hue (H), Saturation (S) and Lightness (L) color model. Alpha (A) allows us to specify a level of opacity for a color. An element with opacity/alpha value of 1.0 is fully visible (opaque) while an element with opacity value 0.0 is completely invisible.

Hue is a degree on the color wheel: 0 & 360 – red, around 120 – green, 240 – blue.
Saturation is a percentage: 0% – grayscale, 100% – full color.
Lightness is a percentage: 0% – dark, 50% – the average, 100% – light.

hsl example Everything You Need to Know about CSS3 Color Techniques

div.L1 { background:hsl(320, 100%, 25%); height:20px; }
div.L2 { background:hsl(320, 100%, 50%); height:20px; }
div.L3 { background:hsl(320, 100%, 75%); height:20px; }
<br />
div.L4 { background:hsl(202, 100%, 50%); height:20px; }
div.L5 { background:hsl(202, 50%, 50%); height:20px; }
div.L6 { background:hsl(202, 25%, 50%); height:20px; }

hsla example Everything You Need to Know about CSS3 Color Techniques

div.L1 { background:hsla(165, 35%, 50%, 0.2); height:20px; }
div.L2 { background:hsla(165, 35%, 50%, 0.4); height:20px; }
div.L3 { background:hsla(165, 35%, 50%, 0.6); height:20px; }
div.L4 { background:hsla(165, 35%, 50%, 0.8); height:20px; }
div.L5 { background:hsla(165, 35%, 50%, 1.0); height:20px; }

Opacity

CSS3 opacity allows us to control how see-through an element is. The opacity declaration sets the value to how opaque an elements (layer, text, image, etc.) is. An element with opacity value 1.0 is fully opaque (visible) while an element with opacity value 0.0 is completely invisible. Any value in-between determine how opaque the element is.

opacity example Everything You Need to Know about CSS3 Color Techniques

div.L1 { background:#036; opacity:0.2; height:20px; }
div.L2 { background:#036; opacity:0.4; height:20px; }
div.L3 { background:#036; opacity:0.6; height:20px; }
div.L4 { background:#036; opacity:0.8; height:20px; }
div.L5 { background:#036; opacity:1.0; height:20px; }

Gradients

There are a whole variety of gradient options available with CSS3. Linear and radial gradients are becoming irreplaceable! They go a long way towards simplifying layouts and allow us to create visually appealing design with saving a huge amount of time and efforts.

To create CSS3 gradient, use background:-moz-linear-gradient(pos, #AAA B, #XXX Y);
pos = the position of the first color, giving direction to the gradient
#AAA = primary color
B = where the fade begins (%)
#XXX = secondary color
Y = where the fade begins (%)

Linear Gradient

lineargradient example 01 Everything You Need to Know about CSS3 Color Techniques

.my_CSS3_class {
  height: 100px;
  background: -moz-linear-gradient(top, #35425d 0%, #fff 100%);
  background: -webkit-gradient(linear, left top, left bottom, 
                     from(#35425d), to(#fff));
}

lineargradient example 02 Everything You Need to Know about CSS3 Color Techniques

.my_CSS3_class {
  height: 100px;
  background: -moz-linear-gradient(left, #35425d 25%, #fff 100%);
  background: -webkit-gradient(linear, left top, left bottom, 
                  from(#35425d), to(#fff));
}

Radial Gradient

radialgradient example Everything You Need to Know about CSS3 Color Techniques

.my_CSS3_class {
  height: 250px;
  background: -moz-radial-gradient(50% 50%, farthest-side, #487a77, #fff);
  background: -webkit-gradient(radial, 50% 50%, 0, 50% 50%, 350, 
                  from(#487a77), to(#fff));
}

Shadows

Box Shadow

Shadows can be applied in CSS3 to borders, images, and text as well.

To create CSS3 box shadow, use box-shadow: Apx Bpx Cpx #XXX;
Apx = x-axis
Bpx = y-axis
Cpx = cast length / feathering
#XXX = colour as usual

boxshadow example Everything You Need to Know about CSS3 Color Techniques

#my_CSS3_id {
  border: 5px solid #c4c8cc;
  -moz-box-shadow: 5px 5px 7px #888;
  -moz-border-radius-bottomright: 15px;
  -webkit-box-shadow: 5px 5px 7px #888;
  -webkit-border-bottom-right-radius: 15px;
}

Text Shadow

Similar to the box shadow effect, CSS3 shadow technique can be applied to text.

To create CSS3 text shadow, use text-shadow: Apx Bpx Cpx #XXX;
Apx = x-axis
Bpx = y-axis
Cpx = cast length / feathering
#XXX = colour as usual

textshadow example Everything You Need to Know about CSS3 Color Techniques

.my_CSS3_class {
  text-shadow: 2px 2px 7px #111;
  font-size: 3.2em;
  color: #f5f5f5;
}

Excellent implementations of CSS3 Color Techniques

CSS3 Gradient Buttons

Gradient buttons created with just CSS (no image or Javascript) are scalable based on the font-size. The button size can be easily adjusted by changing the padding and font-size values.

implementation 01 Everything You Need to Know about CSS3 Color Techniques

“CSS3 Gradient Buttons” Tutorial + Demo

Super Awesome Buttons with CSS3 and RGBA

A tutorial for creating really cool buttons using the RGBA feature of CSS3.

implementation 02 Everything You Need to Know about CSS3 Color Techniques

“Super Awesome Buttons with CSS3 and RGBA” Tutorial + Demo

Browser Support

Detailed information about CSS3 color support in most of the modern web browsers (Chrome, Firefox, Opera, Safari).

Web Designer’s Browser Support Checklist

browser support 01 Everything You Need to Know about CSS3 Color Techniques

FinMeByIP: Web Designer’s Browser Support Checklist

Web Browser CSS3 Support

browser support 02 Everything You Need to Know about CSS3 Color Techniques

Web Devout: Web Browser CSS3 Support

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There are 17 comments for this article
  1. Pingback: [User Link:Everything You Need to Know about CSS3 Color Techniques] | Tips for Designers and Developers | tripwire magazine
  2. Jay Kaushal at 3:45 am

    Thanks Aygul. A wonderful collection of various resources about CSS3. I am also learning these trick alongwith html5 so it is a one place that gives you all info under a single article. Keep it up :)

  3. Websitesdevel at 11:01 am

    Good article. I hope that browsers will support this standart soon! It will be much easier create websites designs with CSS3 – no need for gradient background images, …

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  6. Adie at 12:31 pm

    Nice post. Especially the ‘Web Designer’s Browser Support Checklist’ – most useful. It’s funny how the most popular browser is the one thats lagging behind with css3 though.

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  8. Pingback: CSS3 Tutorials and Resources - WebsitesMadeRight.com

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