UTILSBOX⚡ALL TOOLS54+
JSON.FORMATAll-in-one suite to format, validate, minify, diff compare, and convert JSON.//REGEX.TESTERReal-time regular expressions tester, cheatsheet, debugger and replacer.//PDF.SUITEMerge, split, extract text, rotate and convert PDF pages to images.//IMAGE.STUDIOIn-browser photo editor: crop, resize, filters, WebP/PNG and Base64 encoder.//HTML.BEAUTIFYHTML code beautifier, production minifier and entity encoder.//CSS.MINIFYCSS code formatter, production stylesheet minifier and CSS to SCSS converter.//SQL.FORMATTERSQL query beautifier, dialect translator (Postgres/MySQL) and minifier.//SVG.EXCALIDRAWInteractive vector visual editor powered by Excalidraw and SVG formatter.//TEXT.DIFFWord counter, reading time estimator and dual-text diff comparator.//YAML.CONVERTYAML & JSON bi-directional validator and formatter with syntax checking.//XML.PARSERXML document formatter, tree inspector and XML to JSON converter.//GRAPHQL.STUDIOGraphQL query & SDL formatter, minifier, AST field sorter and validator.//BASE64.CODECBase64 and URL-Safe encoder / decoder with full UTF-8 verification.//LOREM.IPSUMPlaceholder dummy text generator for mockups, prototypes and UI testing.//PASSWORD.GENCryptographically secure random password and entropy strength generator.//URL.STUDIO8-tool URL suite: encode, decode, validator, component parser and builder.//QR.STUDIOCustom QR code generator with embedded logos, colors, gradients and shapes.//ASCII.EXPLORERInteractive ASCII 0-255 table, Alt keyboard codes and CP437 symbols.//KEYCODES.LIVELive KeyboardEvent detector and JavaScript keycodes cheat sheet.//JWT.DEBUGGERJWT token decoder, claims inspector and Web Crypto signature verification.//BINARY.CODECBidirectional text to binary converter with digital rain and ASCII table.//CHARTS.STUDIOInteractive chart generator (bars, lines, pie, scatter) from CSV data.//UUID.V7Bulk generator for UUID v4, time-ordered v7, v1 and live UUID validator.//CSV.JSONBi-directional CSV to JSON converter with custom delimiters & table grid.//COLORS.STUDIOHEX/RGB/HSL/CMYK converter, palette harmonies and WCAG 2.1 contrast tester.//SEO.METASEO Meta Tags, Open Graph cards and real-time Google SERP card preview.//SCHEMA.JSONLDSchema.org JSON-LD structured data generator for Google Rich Snippets.//SITEMAP.XMLStandard XML Sitemap generator (Protocol 0.9) for Google Search Console.//ROBOTS.TXTRobots.txt generator, AI scraper blocking presets and live URL rule tester.//FAKE.DATASynthetic mock data generator: export records to JSON, CSV, SQL and TypeScript.//CLOCK.WORLDReal-time world clock with 3D holographic globe and 174 country timezones.//DATE.CALCDays between dates, exact age, business days, Unix timestamp and cron parser.//CALC.SUITESuite of 56+ online calculators: percentage, mortgage, loan, VAT, BMI & salary.//JSON.FORMATAll-in-one suite to format, validate, minify, diff compare, and convert JSON.//REGEX.TESTERReal-time regular expressions tester, cheatsheet, debugger and replacer.//PDF.SUITEMerge, split, extract text, rotate and convert PDF pages to images.//IMAGE.STUDIOIn-browser photo editor: crop, resize, filters, WebP/PNG and Base64 encoder.//HTML.BEAUTIFYHTML code beautifier, production minifier and entity encoder.//CSS.MINIFYCSS code formatter, production stylesheet minifier and CSS to SCSS converter.//SQL.FORMATTERSQL query beautifier, dialect translator (Postgres/MySQL) and minifier.//SVG.EXCALIDRAWInteractive vector visual editor powered by Excalidraw and SVG formatter.//TEXT.DIFFWord counter, reading time estimator and dual-text diff comparator.//YAML.CONVERTYAML & JSON bi-directional validator and formatter with syntax checking.//XML.PARSERXML document formatter, tree inspector and XML to JSON converter.//GRAPHQL.STUDIOGraphQL query & SDL formatter, minifier, AST field sorter and validator.//BASE64.CODECBase64 and URL-Safe encoder / decoder with full UTF-8 verification.//LOREM.IPSUMPlaceholder dummy text generator for mockups, prototypes and UI testing.//PASSWORD.GENCryptographically secure random password and entropy strength generator.//URL.STUDIO8-tool URL suite: encode, decode, validator, component parser and builder.//QR.STUDIOCustom QR code generator with embedded logos, colors, gradients and shapes.//ASCII.EXPLORERInteractive ASCII 0-255 table, Alt keyboard codes and CP437 symbols.//KEYCODES.LIVELive KeyboardEvent detector and JavaScript keycodes cheat sheet.//JWT.DEBUGGERJWT token decoder, claims inspector and Web Crypto signature verification.//BINARY.CODECBidirectional text to binary converter with digital rain and ASCII table.//CHARTS.STUDIOInteractive chart generator (bars, lines, pie, scatter) from CSV data.//UUID.V7Bulk generator for UUID v4, time-ordered v7, v1 and live UUID validator.//CSV.JSONBi-directional CSV to JSON converter with custom delimiters & table grid.//COLORS.STUDIOHEX/RGB/HSL/CMYK converter, palette harmonies and WCAG 2.1 contrast tester.//SEO.METASEO Meta Tags, Open Graph cards and real-time Google SERP card preview.//SCHEMA.JSONLDSchema.org JSON-LD structured data generator for Google Rich Snippets.//SITEMAP.XMLStandard XML Sitemap generator (Protocol 0.9) for Google Search Console.//ROBOTS.TXTRobots.txt generator, AI scraper blocking presets and live URL rule tester.//FAKE.DATASynthetic mock data generator: export records to JSON, CSV, SQL and TypeScript.//CLOCK.WORLDReal-time world clock with 3D holographic globe and 174 country timezones.//DATE.CALCDays between dates, exact age, business days, Unix timestamp and cron parser.//CALC.SUITESuite of 56+ online calculators: percentage, mortgage, loan, VAT, BMI & salary.//
MODULE 05 · DESIGN & PALETTES

Color Studio & Harmonies

Advanced color suite featuring instant conversion across HEX, RGB, HSL, CMYK, live WCAG 2.1 contrast validator, and harmonic palette generators.

Alpha: 100%
CYBERPUNK PRESETS:
HEX#00F6FF
RGBrgb(0, 246, 255)
RGBArgba(0, 246, 255, 1)
HSLhsl(182, 100%, 50%)
HSLAhsla(182, 100%, 50%, 1)
CMYKcmyk(100%, 4%, 0%, 0%)

CHROMATIC HARMONIES

COMPLEMENTARY (180°)
ANALOGOUS (±30°)
TRIADIC (120°)
TETRADIC (90°)
LIGHTNESS SCALE / SHADES (15% - 90%)

WCAG 2.1 CONTRAST VALIDATOR

ON WHITE BACKGROUND (#FFFFFF)
1.34:1
Aa Text Preview Sample
AA Normal FAILAAA Normal FAIL
ON CYBER DARK BACKGROUND (#0E0C1A)
14.39:1
Aa Text Preview Sample
AA Normal PASSAAA Normal PASS

Complete Guide: Color Spaces, Conversion & Web Accessibility

1. What are Color Spaces (HEX, RGB, HSL, CMYK)?

Color spaces mathematically model light. RGB and HEX define Red, Green, and Blue subpixel emissions for digital displays. HSL (Hue, Saturation, Lightness) describes color humanly. CMYK is subtractive for print.

2. WCAG 2.1 Accessibility Standard & Contrast Ratios

Web Content Accessibility Guidelines (WCAG) mandate minimum contrast ratios of 4.5:1 for body text (Level AA) and 7:1 (Level AAA) to ensure universal legibility across varying vision abilities.

3. Color Harmonies: Complementary, Analogous & Triads

Color harmonies rely on geometric angles on the 360-degree color wheel to produce naturally balanced and aesthetic palette combinations.

4. Modern CSS Innovations: OKLCH, OKLab & color-mix()

OKLCH fixes non-uniform perceptual lightness in HSL, enabling smooth CSS gradients and realistic color interpolations in modern web engines.

Frequently Asked Questions (FAQs)

Why use HSL instead of HEX in CSS stylesheets?

HSL makes dark/light theme variants effortless by simply tweaking lightness (L) while keeping the hue (H) constant.

How is the contrast ratio calculated between two colors?

It divides relative luminance (L1 + 0.05) / (L2 + 0.05), where L1 is lighter and L2 is darker, per W3C specification.

RELATED DESIGN & FRONTEND TOOLS:

CSS Formatter & Minifier →SVG Studio & Excalidraw →Image Editor & Converter →