Make your logo brighter than white
A tool for gain-map JPEGs, plus a CSS trick for text past plain white.
Color news
The case for tri-state dark mode toggles
A reply to Lea Verou: why the system option still earns its place in a theme switcher.
Ask a nerd: can emails include dark and light mode themes?
Only 42% of email clients support prefers-color-scheme, and Gmail inverts colors on its own.
Dark mode toggles: two states are enough
Why the third system option in a theme switcher adds cognitive load without helping users.
Modern CSS theming with
light-dark(),contrast-color(), and style queriesAccessible, composable color themes that adapt elevation to light and dark modes.
Inverted themes with light-dark()
Adaptive theme switching with CSS container style queries and a JS polyfill fallback.
A pragmatic guide to modern CSS colors, part two
Predictable color manipulation with modern CSS.
APCA + WCAG 2 contrast checker
New open-source contrast checker unites APCA and WCAG 2.
<color‑input>, a modern color picker web componentAdvanced color picker supports wide-gamut and multiple color spaces.
Harmonizer, an accessible color palette generator
Generate accessible, consistent color palettes with OKLCH, APCA, and WCAG contrast tools.
A pragmatic guide to modern CSS colors
Kevin Powell explains color spaces, relative colors, and color themes in CSS.
Color shifting in CSS
Smooth color animations using hue-rotate() and @property without gray artifacts.