Universal Color Format Converter (HEX, RGB, HSL, OKLCH)
The problem: Modern web design is adopting perceptual OKLCH color spaces, but design assets in Figma remain stuck in legacy HEX and RGB.
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Universal Color Format Converter (HEX, RGB, HSL, OKLCH): the complete guide
The Universal Color Format Converter translates colors seamlessly between HEX, RGB, HSL, and modern OKLCH color spaces with bidirectional syncing and live interactive swatch previews. Perfect for UI/UX designers and frontend engineers modernizing their CSS stylesheets to wide-gamut Display P3 colors and accessible theme tokens.
From Legacy sRGB to Modern Perceptual OKLCH
Traditional web colors operate in the sRGB color space using HEX (#3b82f6) or RGB (rgb(59, 130, 246)). While ubiquitous, sRGB is perceptually non-uniform: altering the hue in HSL causes perceived brightness to fluctuate wildly (yellow appears dramatically brighter than blue at identical lightness values).
The new CSS Color Module Level 4 standard introduces OKLCH — a cylindrical representation of the Oklab color space designed by Björn Ottosson. OKLCH decouples Lightness (L), Chroma (C), and Hue (H) in a mathematically uniform manner, ensuring that changing hues maintains consistent perceptual brightness across light and dark UI themes.
Instant One-Click Copy for CSS Stylesheets
Working across design files in Figma, legacy codebases in Hex, and modern Tailwind or CSS variable themes requires constant format switching. Our converter updates all four formats in real time as you adjust the visual color picker or edit any individual code field.
Alpha channel transparency is fully supported across all notations (HEX with 8 digits, rgba(), hsla(), and oklch(L C H / alpha)), with dedicated one-click copy buttons for rapid styling workflows.
Step by step: how to use Color Converter
- 1
Select a color using the interactive visual color picker or paste a code into any text field.
- 2
All four color models (HEX, RGB, HSL, OKLCH) update simultaneously.
- 3
Adjust the Alpha transparency slider if your design requires semi-opaque overlays.
- 4
Click the Copy icon next to your desired format to grab clean CSS-ready syntax.
- 5
Inspect the live color preview block against both dark and light background surfaces.
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All color space conversions, gamut mappings, and matrix multiplications run 100% in browser memory.