CSS color-contrast()

About this plugin

Explore how the experimental CSS color-contrast() function will work in future browsers. This plugin emulates the function's behavior, helping designers understand how the upcoming CSS function can simplify accessible design and token management.

What is color-contrast()?

The color-contrast() function is an upcoming CSS feature that automatically chooses between black or white text based on a background color:

Features:

1. 4-step tutorial - Interactive introduction to understand the concept
2. Live emulation - See how color-contrast() would behave in your designs today
3. WCAG algorithms - Uses the same contrast calculations browsers will use
4. DevMode annotations - Add notes about the CSS function for developers

How it works:

1. Select any text layer
2. Click "Apply color-contrast()" to enable the function
3. The plugin emulates the CSS function to decide if black or white provides better contrast against the background
4. Add DevMode annotations to communicate the CSS implementation to developers

Perfect for:

1. Learning about upcoming CSS features before browser support
2. Understanding how automatic contrast selection works
3. Exploring how CSS can reduce design token complexity
4. Experimenting with future-friendly design patterns
5. Teaching teams about accessible color decisions

Example: For a background of #903030, the function calculates:

• White text: 7.92:1 contrast ratio ✅

• Black text: 2.65:1 contrast ratio

Result: White text is automatically applied

Browser Support Status:

CSS color-contrast()has limited support at this time. However, this plugin emulates its function so you you explore and understand the concept before it becomes widely available.

Important: The CSS color-contrast() function is experimental and not ready for production websites. This plugin is for educational exploration and understanding future CSS capabilities.

Learn more about the CSS specification at https://www.w3.org/TR/css-color-5/#colorcontrast.

Get help or contribute on https://github.com/danhendersonede/color-contrast.