HWB Color Picker - Online Whiteness & Blackness Model
Pick colors using the HWB (Hue‑Whiteness‑Blackness) model. Get the CSS hwb() function code. Simpler than HSL for some.
UD5 Toolkit
Pick colors using the HWB (Hue‑Whiteness‑Blackness) model. Get the CSS hwb() function code. Simpler than HSL for some.
Enter original and target color to compute the exact CSS hue‑rotate(deg) filter needed. For precise icon and image tinting.
Pick a base color and generate a 10‑step scale where each step meets a specific contrast ratio against white or black. Export as CSS custom properties.
See how a PWA can extend content into the title bar area on desktop. Customize the window controls overlay.
Reverse entire text, flip letters, or reverse word order. Fun for puzzles and creative writing. Instant transformation without data leaving your browser.
Draw a digit (0‑9) on the canvas and a simple neural net guess the number. Educational demo. No upload.
Click colors on an interactive wheel and see the common emotions and meanings associated with them. A design resource.
Automatically restore natural colors to a photo by removing color casts. Gray world algorithm. One‑click fix. Canvas.
Request HID devices and list them. Read input reports and send output. For custom hardware and controllers.
Shift the color temperature of your photo towards warm (orange) or cool (blue). Instant canvas filter. Download result.
A big button that triggers a colourful confetti cannon full‑screen. Use it to celebrate small wins. Pure joy.
Drag colored shapes to matching outlines. Simple, no-text game for 2-4 year olds. Works on touch devices.
Fetch a site’s HSTS header and validate its syntax, max‑age, and subdomain flags. Ensure your site enforce HTTPS.
Follow along with animated crease patterns to fold a paper crane. Pause and rewind steps.
Create a fully accessible form by adding fields; the tool generates the proper labels, inputs, and ARIA attributes. Copy the clean HTML.
Play infinite sound loops of white, pink, brown, blue, and violet noise. Volume control. Help focus or mask tinnitus.
Reverse every word in a sentence individually while keeping the word order. 'Hello World' becomes 'olleH dlroW'. Simple fun.
Paste an HTML snippet and check for common ARIA mistakes: missing labels, invalid roles, and aria‑hidden misuse. Educate your team.
Validate a language tag like en‑US or zh‑Hans against the IANA registry. Ensure correct HTML lang attribute.
Convert English text to Braille (Grade 1 and simple Grade 2 contractions). Educational tool to understand Braille representation. Local only.
See how a color is interpreted in different cultures (e.g., red in China vs. Western). Crucial for global web design. Static guide.
Start with a base color and generate an extended palette where every shade contrasts properly with white and black. Export tokens.
Test the experimental Translation API to translate text between languages directly in the browser, without cloud calls. Check support and copy the JavaScript starter.
Convert plain text into HTML‑safe strings by escaping <, >, &, and quotes. Insert into code safely. Local copy.
Flip a coin with adjustable bias (e.g., 70% heads). Used for random decision-making when you want to gently influence outcomes. History & stats shown.
Calculate the perceived brightness of an RGB color and determine if black or white text is more readable. Accessibility tool.
Search common dream symbols and their traditional meanings. For entertainment and self-reflection. Static data.
Enter any number up to trillion and get the English word representation. For filling out checks or legal documents.
Generate a grand, aristocratic title like 'Duke of Waffleshire'. Perfect for silly fun or RPG characters. Local.
Add N business days to a date, skipping weekends and optionally entering custom holidays. Regional presets.