Hex Color Clock - Online Time Displayed as Background Color
Every second, the background color changes to the hex code corresponding to the current time (HHMMSS). A beautiful, ever‑changing clock.
UD5 Toolkit
Watch the pattern — Repeat it back
Every second, the background color changes to the hex code corresponding to the current time (HHMMSS). A beautiful, ever‑changing clock.
Simulate forced‑colors mode and see how your site looks. Adjust CSS system colors. Make your design accessible.
Alternates between near and far focus cues with timed breaks. Reduce digital eye strain.
Run a countdown timer that automatically repeats for a set number of laps. Great for HIIT, study sprints, or any interval work.
Set a wake-up time and the screen gradually brightens from dark to warm yellow. Use as a gentle alarm.
Create a pure CSS countdown timer with a flipping number effect. Adjust duration and style. No JavaScript needed for display.
Translate HEX colors to HSL values and adjust lightness and saturation visually. Great for creating color variations in CSS design systems.
Click through the TCP connection states (LISTEN, SYN_SENT, ESTABLISHED…) and see the animated transitions. Networking education.
Convert HSL and HSLA color specifications back to standard HEX codes. Useful when extracting colors from CSS preprocessors. Instant client-side conversion.
View the current time in binary (BCD) format. A stylish geek clock with dot columns. Toggle between binary and decimal labels.
Randomly generated subnetting questions. Calculate network address, broadcast, and usable range. For CCNA prep.
Create binaural beats by setting base frequency and beat frequency. Use headphones. For relaxation or focus. Web Audio API.
Enter any hex color and find the nearest Tailwind CSS color class. Also shows the Tailwind palette shade.
Upload a screenshot or image and use the magnifying glass to pick exact colors. Get hex, RGB, and HSL. Simple.
Input a hex color and adjust its lightness by a percentage. Get tristimulus shades for CSS. Quick and visual.
Apply a customizable gradient overlay to any image. Perfect for banners and social media. Download the result. Local.
See the current time displayed in binary and hexadecimal. Dark theme, full‑screen mode. A geeky desk decoration.
Find the optimal go‑to‑sleep or wake‑up times based on 90‑min sleep cycles. Wake up between REM cycles and feel refreshed.
Set an alarm that rings at a specific time even if the tab is in background. Multiple alarm tones. Works offline.
Automatically improve the contrast of dark or washed‑out photos using histogram equalization. One‑click auto‑tune. All canvas‑based.
Display a stylish retro flip clock or Nixie tube clock in full screen. Perfect for desk presentation or decoration. Pure CSS and JS.
Generate cryptographic and checksum hashes for any text string. Supports MD5, SHA-1, SHA-256, and CRC32. All hashing runs locally for maximum privacy.
Generate SHA‑1, SHA‑256, SHA‑512, and SHA‑3 digests of any text or file. Verify integrity. All in your browser.
Route your microphone input through a chain of virtual effects (distortion, reverb, delay) using Web Audio API.
Enter a future eclipse date and approximate location to see estimated contact times. Event countdown.
Enter two Roman numerals and add or subtract them. See the result in Roman and Arabic. A fun mental workout.
Use your device's orientation sensor or manually enter a location to find the bearing toward Mecca. Simple compass tool.
Use your camera to scan 1D barcodes (UPC, EAN, CODE128) directly in the browser. Quick and no app install. All scanning is local.
Point your camera at a barcode and decode it live. Works with multiple formats. Pure JavaScript barcode detection.
Upload two images and apply CSS blend modes (multiply, screen, overlay, etc.). See the result and copy the filter CSS. Pure frontend.