0 0 2px 1px rgba 30 140 190 .8 /728×90.php

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RGBA is abbreviation of Red Green Blue Alpha. The color RGBA value is 30 140 190 8. The red value is 30, green value is 140 and the blue value is 190. There is the standard RGB values which are 30 140 190 at the first three value. Then the last value it is for Alpha. Based on the research, the definition of RGBA is a way to declare a color in CSS that include the color of red, green and blue and then it is followed by the alpha channel transparency support that make alpha channel to blend and composite. In the RGB color space, it is composed of 11.8% red, 54.9% green and 74.5% blue. Than in the CMYK color space, it is composed of 84.2% cyan, 26.3% magenta, 0% yellow and 25.5% black. It has the hue angle of 198.8 degrees.

As we know that RGBA is the extension of the RGB color model. RGBA colors values are support in Chrome, Safari, Firefox and Opera. RGBA is the type of CSS color value which offers us to set a color and it is opacity and transparency. Do you know how to use the RGBA? Well at the moment, in this article we will tell you a little bit the example of RGBA. In the text below, there are the examples of using the CSS RGBA color with opacity.

–          Background color: RGBA (255, 0, 0, 0.3) / Red with opacity.

–          Background color: RGBA (0, 255, 0, 0.3) / Green with opacity.

–          Background color: RGBA (0, 0, 255, 0.3) / Blue with opacity.

Unfortunately, RGBA cannot support in all browser, therefore you have to declare a fallback color. It means to normalize the alpha channel on the setting which you want for each of the color channels. As we said before that RGBA is a type of CSS color value which offers you to set a color. What is CSS? Well we will also explain it. CSS color can determine by some methods. Its methods are Hexadecimal colors, RGB colors, RGBA colors, HSL colors, HSLA colors and cross browser color names. Hexadecimal colors values are available in all major browsers. It is determined with: #RRGGBB. The RR for red, GG for green and BB for blue, which is the hexadecimal integers, specify the components of the color. Remember that all values must be between 00 and FF. For example, the #0000ff value is offered as blue. It is because the blue component is set to its highest value (ff) and the others are set to 00. Then RGB colors values are supported in all major browsers also. It is determined with RGB (Red, green, blue). RGBA colors contains of RGB values with following by Alpha channel. RGBA colors values are support in Chrome, Safari, Firefox and Opera. An HSL color is stands for stands for hue, saturation and lightness. HSLA colors values, it is contains of HSL color values which is followed by an alpha channel that is determined the opacity of the object. The last is predefined or cross browser color names. In the HTML and CSS color specification, there are approximately one hundred forty color names predefined.

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