Spectra – Color Picker & Palettes by Tron
Pick any color from a web page or your screen and copy it as HEX, RGB or HSL. Build palettes from Apple, Google, Material, Microsoft and more. Private by design.
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About this extension
Spectra is a beautiful color picker and palette studio for Firefox, designed with Apple-style colors and built to stay out of your way.
PICK COLORS ANYWHERE
- From any web page: click the toolbar icon (or press Alt+Shift+C), then click any pixel. A magnifier shows exactly what you're picking. Use the arrow keys for pixel-perfect precision.
- From your whole screen: capture any screen or window (Photoshop, Figma, a game, a video) and pick from it. Spectra grabs a single frame, locally.
- From an image: drop, open or paste (Ctrl+V) any image and pick from it.
COPY IN ANY FORMAT
HEX, RGB and HSL are always one click away. Need more? HSB, CMYK, OKLCH, the nearest CSS color name and Swift UIColor are included. Choose your default format and Spectra can copy automatically the moment you pick.
READY-MADE PALETTES
Browse 14 curated sets and click any color to copy it:
Apple, Apple Dark, Google, Material Design (full 50–900 shades), Microsoft, Windows Accents, Tailwind (full shades), Flat UI, Nord, Dracula, Pastel, Vivid, Earth and Ocean.
PALETTE GENERATOR
Start from any color and generate complementary, analogous, triadic, split, tetradic, monochrome or shade palettes. Lock the colors you like, shuffle the rest, and export as CSS variables, SCSS, JSON or a Tailwind config.
MORE
- Extract the dominant colors from the page you're viewing
- Contrast checker with WCAG AA / AAA results
- Shades and tints of every color
- Favorites, history and saved palettes
- Paste any color (hex, rgb, hsl or a name) to convert it
- English and Arabic interface with full right-to-left support
- Light and dark appearance
PRIVACY
Spectra collects no data. Nothing is sent anywhere: no analytics, no tracking, no network requests. Your history, favorites and settings stay on your device.
PERMISSIONS
- activeTab – to capture the visible tab and show the picker only when you click the button or use the shortcut
- scripting – to display the picker on the current page on demand
- storage – to save your settings, favorites, history and palettes locally
- clipboardWrite – to copy color values for you
Note: Firefox does not allow add-ons on some pages (New Tab, about: pages, addons.mozilla.org, PDF viewer, reader view). On those pages use "From screen" instead.
Developed by Mo.
PICK COLORS ANYWHERE
- From any web page: click the toolbar icon (or press Alt+Shift+C), then click any pixel. A magnifier shows exactly what you're picking. Use the arrow keys for pixel-perfect precision.
- From your whole screen: capture any screen or window (Photoshop, Figma, a game, a video) and pick from it. Spectra grabs a single frame, locally.
- From an image: drop, open or paste (Ctrl+V) any image and pick from it.
COPY IN ANY FORMAT
HEX, RGB and HSL are always one click away. Need more? HSB, CMYK, OKLCH, the nearest CSS color name and Swift UIColor are included. Choose your default format and Spectra can copy automatically the moment you pick.
READY-MADE PALETTES
Browse 14 curated sets and click any color to copy it:
Apple, Apple Dark, Google, Material Design (full 50–900 shades), Microsoft, Windows Accents, Tailwind (full shades), Flat UI, Nord, Dracula, Pastel, Vivid, Earth and Ocean.
PALETTE GENERATOR
Start from any color and generate complementary, analogous, triadic, split, tetradic, monochrome or shade palettes. Lock the colors you like, shuffle the rest, and export as CSS variables, SCSS, JSON or a Tailwind config.
MORE
- Extract the dominant colors from the page you're viewing
- Contrast checker with WCAG AA / AAA results
- Shades and tints of every color
- Favorites, history and saved palettes
- Paste any color (hex, rgb, hsl or a name) to convert it
- English and Arabic interface with full right-to-left support
- Light and dark appearance
PRIVACY
Spectra collects no data. Nothing is sent anywhere: no analytics, no tracking, no network requests. Your history, favorites and settings stay on your device.
PERMISSIONS
- activeTab – to capture the visible tab and show the picker only when you click the button or use the shortcut
- scripting – to display the picker on the current page on demand
- storage – to save your settings, favorites, history and palettes locally
- clipboardWrite – to copy color values for you
Note: Firefox does not allow add-ons on some pages (New Tab, about: pages, addons.mozilla.org, PDF viewer, reader view). On those pages use "From screen" instead.
Developed by Mo.
Rated 0 by 0 reviewers
Permissions and data
Required permissions:
- Input data to the clipboard
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.2
- Size
- 79.35 KB
- Last updated
- 8 days ago (Sep 21, 2026)
- Related Categories
- License
- All Rights Reserved
- Version History
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The developer of this extension asks that you help support its continued development by making a small contribution.