文字混合在背景色上 [英] Text blended over background color

问题描述

我正在尝试设置如下所示的进度条:

I'm trying to style a progress bar which looks like this:

左边部分可以有不同的颜色(绿色，橙色等)，我希望文本根据下面的背景更改颜色.理想情况下，在浅灰色右侧部分上应为黑色/深灰色(如示例中所示)，当左侧部分较浅时应为黑色/深灰色，而当左侧较暗时应为白色(如示例中的白色).在示例中为绿色).

The left part can have different colors (green, orange, etc) and I want the text to change color according to the background underneath. Ideally, it should be black/dark-grey over the light-grey right part (like in the example), same black/dark-grey when the left part is rather light, and white when the left part is rather dark (like the green in the example).

我尝试了各种mix-blend-mode: difference和color组合，但无法实现. 裸露示例此处 我也尝试过filter: grayscale(1) contrast(9);

I tried various mix-blend-mode: difference and color combinations, couldn't achieve this. Bare example here I tried also something along filter: grayscale(1) contrast(9);

.container {
  width: 200px;
  height: 20px;
  position: relative;
  background-color: #eee;
  text-align: center;
}

.progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background-color: #43a047;
}

.text {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  mix-blend-mode: difference;
  color: white;
}

<div class="container">
  <div class="progress"></div>
  <div class="text">Some text here</div>
</div>

推荐答案

您可以创建另一个渐变来为文本着色，而无需使用混合混合模式:

You can create another gradient to color the text without the use of mix-blend mode:

.container {
  width: 200px;
  height: 20px;
  background: linear-gradient(to right, #43a047 50%, #eee 0) no-repeat;
  text-align: center;
}

.text {
  background: linear-gradient(to right, white 50%, black 0) no-repeat;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  font-weight: bold;
}

<div class="container">
  <div class="text">Some text here</div>
</div>

为了获得更好的灵活性，您可以使用CSS变量来控制进度:

And for better flexibility you can use CSS variable to control the progress:

.container {
  width: 200px;
  height: 20px;
  background: linear-gradient(to right, #43a047 var(--p,50%), #eee 0) no-repeat;
  text-align: center;
}

.text {
  background: linear-gradient(to right, white var(--p,50%), black 0) no-repeat;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  font-weight: bold;
}

<div class="container" style="--p:80%">
  <div class="text">Some text here</div>
</div>

<div class="container" style="--p:20%">
  <div class="text">Some text here</div>
</div>
<div class="container">
  <div class="text">Some text here</div>
</div>

这篇关于文字混合在背景色上的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！