Transparent color in Photoshop. How to make a color transparent in Photoshop? Set transparency for css background
How to set transparent color in css? Currently there are 3 ways to do this.
Method 1 - transparent value
If you set the value of the text or background color to transparent , the color will be completely transparent, that is, invisible. Example:
Color: transparent;
Such text will not be visible on the page.
Method 2 - rgba color mode
And this is a css3 innovation. Previously, there was no such mode in web development, there was only rgb. Surely you know how to record color in this format. To do this, you need to specify three values in brackets from 0 to 255, indicating the saturation of one of the three primary colors (red, green, blue). For example:
Background: rgb(230, 121, 156);
The rgba format is no different, it just adds a fourth value - the degree of transparency of the element from 0 to 1. In general, this recording format is mainly used to set a translucent color, rather than completely transparent. To achieve full transparency, you just need to write 0 as the fourth value.
Background: rgba(0, 0, 0, 0);
In this case, the remaining 3 digits do not play a special role.
A translucent color can be set if the fourth parameter is set to a value from 0.01 to 0.99. I already wrote a little about setting translucency for the background in , you can read it if interested.
Method 3 - opacity
Another property from css3 technology. But I want to warn you right away that it works a little differently. Opacity sets the transparency of the entire block to which it is applied. Thus, the readability of the text and the perception of pictures deteriorate. So I see the point of using this property only for blocks that do not contain text or any other information. Values can be set from 0 to 1, as is the case with the fourth parameter when specifying a color in the rgba format.
In general, at the moment these are all the ways I know of setting a transparent color in CSS. Why this is needed is another question. Through a transparent background, what is underneath can be seen. Sometimes it needs to be done this way by design. In general, the translucency technique is very common today.
Transparent background
As you may know, background is a CSS property that allows you to set a background color or load an image to act as the background.
Set transparency for css background
So, all this is done very simply thanks to a color recording format like rgba. If you work with graphic editors, then you probably know that the rgb color mode stands for: the proportion of red (red), the proportion of green (green) and blue (blue). So, rgba is practically the same, only one more parameter is added - transparency. It is written like this:
Background-color: rgba(173, 57, 22, 0.5)
First we explicitly indicate that we are setting the color in rgba mode. Then we indicate the saturation values of the three primary colors from 0 to 255, where 255 is the highest saturation. The fourth parameter is our transparency. The value from 0 to one is written here. 1 is a completely opaque element, and 0 is a completely transparent element. Accordingly, if you set it to 0, then the background color will not be visible at all.
Now you know how to set the background property to transparency in CSS. To do this you need to use the rgba color mode. There is also an opacity property, but it applies to the entire element as a whole. That is, when applying opacity, transparency can be applied to the text, making it unreadable.
Transparent background example
The advantages of a translucent background are easy to show with an example. For example, we have a general page background. This is what the block would look like if it were given a solid black color:
Now let’s set the same black color to the block, but specify it using the rgba color format, specifying the last value as 0.7, for example. It will turn out like this:
Now the background of the block is visible through it and the background image is visible through it. This picture and background are for example only. As you can imagine, in css background transparency can come in handy when you want the background of a nested element to show through without obscuring other backgrounds located on other layers.
Setting the color itself using rgba is not difficult. As already mentioned, the first three letters mean the three primary colors: red, green and blue, or rather their share (from 0 to 255). By setting different values, you can get millions of different colors, and translucency will allow you to come up with a lot more beautiful effects for the site, if necessary.
In some cases, for example, when designing a website, you may encounter a situation where the background of the image in no way matches the color of the website itself. The obvious solution is to make this background transparent.
You will need
- - Adobe Photoshop.
Instructions
The main thing is to specify the picture on your computer or phone, and then click OK at the bottom of this page. By default, the plain background of the picture is replaced with a transparent one. The background color of the original image is determined automatically; you just need to specify in the settings what color to replace it with. The main parameter that affects the quality of the replacement is “Replacement Intensity” and it can be different for each picture.
An example of a photograph of a pink rose without changes and after replacing the plain background with transparent, white and green:
First example with a rose flower on a transparent background made with the following settings:
1) Replacement intensity - 38;
2) Smoothing along the edges - 5;
3) Replace the plain background with a transparent one;
4) Trimming (<0) или Добавление (>0) at the edges - "-70";
5) Invert - disabled (not checked).
To create second example, with a white background, the same settings were used as in the first example, except for the parameter: “Replace plain background with” - white. IN third example, with a green background, the settings are also used as in the first example, except for the parameter: “color in hex format” - #245a2d.
The original image is not changed in any way. You will be provided with another processed picture with a transparent or specified background.