CSS color-contrast()

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:color: color-contrast(#903030);/* Automatically returns white or black */color: color-contrast(var(--background-color));/* Works with CSS design tokens */ Features:

4-step tutorial - Interactive introduction to understand the conceptLive emulation - See how color-contrast() would behave in your designs todayWCAG algorithms - Uses the same contrast calculations browsers will useDevMode annotations - Add notes about the CSS function for developersHow it works:

Select any text layerClick "Apply color-contrast()" to enable the functionThe plugin emulates the CSS function to decide if black or white provides better contrast against the backgroundAdd DevMode annotations to communicate the CSS implementation to developersPerfect for:

Learning about upcoming CSS features before browser supportUnderstanding how automatic contrast selection worksExploring how CSS can reduce design token complexityExperimenting with future-friendly design patternsTeaching teams about accessible color decisionsExample: For a background of #903030, the function calculates:• White text: 7.92:1 contrast ratio ✅• Black text: 2.65:1 contrast ratioResult: White text is automatically appliedBrowser 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.