UD5 Toolkit
HTML Color Names - Online Complete List with Hex & Preview
A complete, searchable list of all 140+ named HTML/CSS colors with their hex codes and color previews. Click to copy code. Essential web reference.
Color Name Finder - Online Hex to Name Dictionary
Color Name Finder
Type a HEX code to instantly find its closest CSS color name
Best Match
Preview
Frequently Asked Questions
A Color Name Finder is an online tool that takes a HEX color code (like #FF0000) and returns the nearest CSS/SVG named color from the standard web color palette. It helps designers and developers translate machine‑readable codes into human‑friendly names like “Tomato” or “DodgerBlue”.
We use the full set of 148 extended CSS color keywords (CSS Color Module Level 4), which includes classic names like Red, Green, Blue as well as newer additions like RebeccaPurple. Every name has an official HEX value defined in web standards.
If your HEX code perfectly matches a named color’s HEX value, you get an exact match. Otherwise the tool calculates the Euclidean distance in RGB space and suggests the nearest named color. The more specific the code, the closer the match.
Yes. The tool automatically expands shorthand HEX codes (#ABC → #AABBCC) before searching, so common three‑character shortcuts work exactly the same.
Named colors make your stylesheets more readable and maintainable. Instead of cryptic HEX values, a name instantly communicates intent (e.g.,
color: coral;). They are fully supported across all modern browsers.
Color Name to Hex - Online Official CSS Colors
Type a CSS color name like 'tomato' or 'mediumseagreen' and instantly get its hex code and preview. Complete named colors list.
Online Color Picker - Eye Dropper & Color Selection Tool
Pick colors from a palette or use the eye dropper to sample colors from your screen. Converts between HEX, RGB, HSL. An essential tool for designers.
Named CSS Colors Explorer - Online Preview All 148
Grid of all 148 named CSS colors. Hover to see detail, click to copy the name or hex. Essential frontend reference.
RGB to HEX Converter - Online Color Translator
Convert RGB and RGBA color values to their HEX or HEX+alpha representation. Live preview and copy CSS color strings instantly.
CSS Color Extractor - Online Find All Hex in Stylesheet
Paste a stylesheet and extract every unique color (hex, rgb, hsl) into a palette. Swatches displayed. Copy as JSON.
HEX to RGB Converter - Online Color Code Translator
Quickly convert HEX color codes to RGB values and vice versa. See the color preview. Indispensable for web developers and graphic designers.
CSS Color Converter All-in-One: Hex, RGB, HSL, OKLCH
Enter color in any CSS format and see all other representations. Live preview. Swatch history.
HSV Color Picker - Online Traditional Hue Wheel
Classic HSV color wheel with sliders. See hex, RGB, and HSL equivalents. Intuitive for artists. No server interaction.
Emotion to Color Palette – Online Pick Mood & Get Hex
Select emotions (calm, energetic, sad) and generate a harmonious color palette that reflects the mood.
Image Color Palette Extractor - Online Upload & Get Hex
Upload an image and instantly get a 6‑color palette with the most dominant shades. Click to copy hex codes. Canvas‑based.
Color Temperature to RGB - Online Kelvin to Hex Converter
Enter a Kelvin value (1000‑40000) and see the approximate white‑balance color. Photography and lighting reference.
Screen Color Picker - Online Eyedropper with Magnifier
Use the browser's native eyedropper tool to pick any color from the screen. Shows zoomed preview. Quick and easy.
CSS Color Function Explorer - Online Write Modern Colors
Write modern CSS color functions like oklch(), lab(), hwb() and see the rendered color with fallback. Copy compatible code.
Unit Abbreviation Dictionary - Online Look Up kVA, BTU, etc.
Search a comprehensive list of physical unit abbreviations (kVA, BTU, scfm, etc.) and their full name. Quick reference. Local data.
Internet Slang & Acronym Dictionary - Online Quick Lookup
Search a curated dictionary of modern internet acronyms (IMO, TBH, IYKYK) and slang. Simple offline-capable reference. No tracking.
Screenshot Color Picker - Online Upload & Pick Hex
Upload a screenshot or image and use the magnifying glass to pick exact colors. Get hex, RGB, and HSL. Simple.
Hex Color Guessing Game - Online Guess the Hex Code
See a color swatch and guess its hex code. Get scored on accuracy. Improve your color intuition. Fun for designers.
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.
HTML Color Input Explorer - Online Native Picker & Events
Use <input type='color'> and see its change events and value in hex. Understand the native color picker. Quick demo.
Random Card Picker - Online Deck Draw & Shuffle
Click to draw random playing cards from a shuffled deck. The full deck is displayed. Use for decision or magic tricks.
Live Binary Clock - Online Hex & Decimal Time
See the current time displayed in binary and hexadecimal. Dark theme, full‑screen mode. A geeky desk decoration.
Random TV Episode Picker - Online Decide What to Watch
Enter a TV show name and let the tool pick a random season and episode for you to watch. Uses local data for popular shows.
Dominant Color Detector - Online Find Main Hue
Upload an image and instantly see its most dominant color as a hex swatch. Uses color quantization. Local.
Hex to Float Converter - Online IEEE 754 Decoder
Enter a hexadecimal string and decode it as a 32‑bit or 64‑bit floating‑point number. Low‑level developer tool.
Color Harmony Picker - Online Complementary Split‑Comp
Choose a base color and see its complementary, split‑complementary, triadic, and tetradic harmonies. Copy palettes. Local.
Image Color Picker From URL - Online Remote Picture Analyzer
Enter the URL of any online image and extract its dominant colors or pick colors with a magnifier. No upload, cross‑origin friendly.
Emoji Slang Dictionary - Online Interpret Hidden Meanings
Look up what certain emojis really mean in texting (e.g., 🍆, 💀). Fun and educational for parents and newbies.
Weak Password Dictionary Check - Online Top 10k List
Compare your password against a built‑in list of the 10,000 most common passwords. Instant warning if it appears.
Word Origin Dictionary - Online Quick Etymology Lookup
Enter an English word to get a quick etymology. From a curated list of common roots. Learn language history.