LumenShade — Smart Dark Mode

Smart dark mode that perceptually remaps web colors with OKLCH. Eye-friendly. Brand-aware.

LumenShade is a smart dark mode for the modern web. Instead of crudely inverting colors like most extensions, it perceptually remaps every page using the OKLCH color space — so dark surfaces feel natural, text stays readable, and brand colors keep their identity. Why LumenShade is different Perceptual color science (OKLCH), not naive CSS invert Contrast guard automatically enforces APCA-level readability Brand-aware: accent colors keep their hue and chroma Image-safe: photos, video and canvas are gently dimmed, never inverted Per-site control with a one-click whitelist Sunset-to-sunrise scheduling Live brightness, contrast, warmth and image-dimming sliders Zero tracking. No account required. Settings stay on your device. Who it's for People who read for hours and want a dark mode that doesn't fight them Designers and developers who care how the web looks at night Anyone tired of "dark mode" that turns photos into negatives Free to install. Optional Pro plans unlock custom palettes and cloud-synced settings. Keyboard shortcut: Alt+Shift+D toggles LumenShade on the current tab.