Colorframe is a native macOS color picker: pick any pixel on screen with an eyedropper, manage palettes, and copy colors in HEX, RGB, HSL, or OKLCH.
It checks WCAG AA and AAA contrast directly inside the app, updating in real time as you pick foreground and background colors, so there's no need to switch to a separate contrast checker mid-workflow.
Mac users who want a fast, native system-wide color picker with built-in accessibility checking and OKLCH support, rather than a browser-based tool.
It's a one-time $19 purchase with lifetime updates, not a subscription. Worth it specifically if you pick colors from the screen often enough that a dedicated native app beats a browser color picker extension.