Скачать или смотреть How to Fill an SVG with the Opposite Background Color Using CSS

Discover how to utilize `mix-blend-mode` in CSS to fill your SVG dynamically based on the background color for a striking visual effect.
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How to Fill an SVG with the Opposite Background Color

Have you ever wanted to dynamically change the color of an SVG based on the background? It's a common design challenge, especially when you're working with gradients or colored backgrounds. In this guide, we'll explore how to achieve this effect using CSS and SVG, specifically leveraging the mix-blend-mode property.

The Problem

You have an SVG that you'd like to set to a color that opposes the background color of a div. For example, if the background color is black, you want the SVG to be white, and vice versa. This dynamic approach helps in creating a visual interplay between the SVG graphic and its container, enhancing the overall design.

The Solution: Using mix-blend-mode

To achieve the effect of an SVG reflecting the opposite background color, we can use the CSS property mix-blend-mode. This property allows elements to blend with their backgrounds based on specified blending modes. Here's a breakdown of how to implement this:

Step-by-Step Implementation

Setting Up the HTML Structure
Ensure your HTML contains an SVG inside a div. Here’s a basic structure:

[[See Video to Reveal this Text or Code Snippet]]

Adding the CSS for Background and Blending
You'll want to set a linear gradient as the background of your div, and then apply the mix-blend-mode to the SVG. Here’s how you do this:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the CSS:

Background Gradient: The div uses a linear gradient transitioning from black to white. This creates the contrasting areas where the SVG will change color.

mix-blend-mode: Setting this property to difference on the SVG means it will take the colors of the background and invert them. If the background is black, the SVG will appear white; if the background is white, it will appear black.

Visualization

This blending is particularly striking. Imagine having a constantly changing background with blended colors - the SVG seamlessly adjusts to provide a perfect contrast.

Conclusion

By utilizing CSS's mix-blend-mode, you can creatively manage how SVGs appear against different backgrounds. This method not only simplifies the coding process but also enhances the visual appeal of your web designs. Experiment with different backgrounds and SVG shapes to see how they interact.

Give it a try in your next web project, and watch your SVGs come alive by responding to their backgrounds. Happy coding!