如果背景图片不是白色，是否更改文字颜色? [英] Change text color if background image is not white?

问题描述

我已经阅读了很多有关此的文章，但没有找到任何解决我的问题的方法.

I have read a lot articles about this but haven't found anything to solve my problem.

是否可以通过Jquery或/和CSS根据背景图像更改文本颜色?

Is it possible somehow to change text color based on background image with Jquery or/and CSS?

我必须按照此要求创建一个响应式网站，但被卡住了.

I have to make a responsive website with this requested, but got stuck.

推荐答案

一个想法是使用反转的背景为文本着色.

An idea is to color the text with an inverted background.

这里是考虑radial-gradient的想法:

.box {
  padding: 50px;
  background: radial-gradient(circle at 70% 0px, #fff 45%, purple 45.5%) fixed;
}

p {
  font-size: 25px;
  font-weight: bold;
  /*Should be the same background but inverted color*/
  background: radial-gradient(circle at 70% 0px, purple 45%, #fff 45.5%) fixed;
  background-clip: text;
  color: transparent;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

<div class="box">
  <p>Some text here Some text here Some text here Some text here </p>
</div>

在您的情况下，背景似乎是一幅图像，因此您只需要找到一个可以转换颜色的相似渐变即可.

In your case, the background seems to be an image so you simply need to find a gradient that is similar where you can invert the colors.

另一个想法是使用基本图像并添加覆盖层以创建结果:

Another Idea is to use a basic image and add an overlay to create the result:

.box {
  padding: 50px;
  background: 
   radial-gradient(circle at 70% 0px, #fff 35%, rgba(27, 128, 0, 0.6) 35.5%),   
   url(https://picsum.photos/500/800?image=1069) center/cover;
  background-attachment:fixed;
}

p {
  font-size: 25px;
  font-weight: bold;
  /*Should be the same background but inverted color*/
  background: radial-gradient(circle at 70% 0px, rgba(27, 128, 0, 1) 35%, #fff 35.5%) fixed;
  background-clip: text;
  color: transparent;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

<div class="box">
  <p>Some text here Some text here Some text here Some text here </p>
</div>

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