Text blended over background color

css

Solution

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);
  text-align: center;
}

.text {
  background: linear-gradient(to right, white 50%, black 0);
  -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>

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

.container {
  width: 200px;
  height: 20px;
  margin:5px;
  background: linear-gradient(to right, #43a047 var(--p,50%), #eee 0);
  text-align: center;
}

.text {
  background: linear-gradient(to right, white var(--p,50%), black 0);
  -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>

Problem

I'm trying to style a progress bar which looks like this: 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). 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> ```

Original source