web-feature: HWB

Widely available

The hwb() CSS function picks colors using hue, whiteness, and blackness channels.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-10

Servo

Android

2026-10

ArkWeb

HarmonyOS

*

Chrome Browser

Android

101

Safari Browser

iOS

15