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RGB to OKLCH

Convert RGB to OKLCH for free: type red, green and blue from 0 to 255 and get the oklch() value to move an existing palette into modern CSS. rgb(59, 130, 246) becomes oklch(62.308% 0.18801 259.81). With your colors in OKLCH, a lighter or darker shade is just a change of the first number. It runs in your browser.

How to convert RGB to OKLCH

  1. 1Type R, G and B into "Color", such as 59 130 246
  2. 2Or paste rgb(59, 130, 246), a hex code or a CSS name
  3. 3Copy the oklch() value from the big line
  4. Your RGB color as oklch(L C H) for your stylesheet

Good for a palette move

  • Bare numbers work.On this page 59 130 246 is read as RGB, with spaces or commas between the numbers
  • Same color, more views.OKLab, Lab, LCH, HSL and HEX of the color are listed too, each with a copy button
  • Nothing is sent anywhere.Your browser works out the values, on your own device

What you can do

  • Turn RGB from 0 to 255, or rgb() with percentages, into oklch() with L in percent
  • Use the color picker to pick a color: the field writes it as rgb(), the OKLCH value follows
  • See the nearest Tailwind 4 color, whose palette is defined in OKLCH, and the nearest Tailwind 3 color and CSS name
  • Copy OKLab too, if your code mixes or blends colors in that space

Good to know

  • RGB is taken as sRGB, the color space of the web. Every sRGB color fits into OKLCH, so nothing is moved or cut in this direction
  • Each channel runs from 0 to 255. A value outside that range gives a message instead of a color
  • For grays the chroma is 0 and the hue has no meaning, so the hue is written as 0

Questions

How do I convert RGB to OKLCH?

Type the three RGB numbers into the field. The oklch() value appears in the big line right away. 34 197 94, for example, gives oklch(72.275% 0.19201 149.58).

What do the three OKLCH numbers mean?

L is lightness from 0% (black) to 100% (white). C is chroma, how colorful the color is, from 0 for gray up to about 0.32 in sRGB. H is the hue angle from 0 to 360.

Will the color look the same after converting?

Yes. The oklch() value describes the same color as your RGB, and it turns back into the same RGB numbers. Only the way of writing it changes.

Is my color uploaded anywhere?

No. The conversion runs in your browser. No request is made with your color.

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How it works

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What runs where

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A tool your browser has kept also works without internet. Under Offline, at the bottom of this page, you can save everything at once, and the site keeps working without a connection.

Some tools have AI built in, for example to remove a background or enlarge a photo. Your browser downloads their AI models once, from ToolRecipe itself, and then runs them on your device. No tool sends your files to an online AI service or to us.

On a computer, these tools use the graphics chip when it passes a short check, because that is usually faster. On a phone they run on the processor, with settings that fit in a phone’s memory.

Using a tool

Give the tool your file, choose what you want, save the result.

  • Start on the home page

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  • Choose the settings

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What one tool makes can go straight into the next, without saving it and opening it again.

  • “Use it in”

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  • Drag it

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  • From a chain to a recipe

    To run the same tools again later, make a recipe of them in the recipe builder.

The recipe builder

Drop a file in the box on the home page and add the steps one at a time. Nothing runs until you press “Run recipe” or “Open tool”.

  • Pick what to do

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  • Save or start over

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Recipes

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  • Ready-made recipes

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  • My recipes

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  • Share a recipe

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Ways of working

Tools and recipes run in your browser, on your device.

  • Start from a file

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  • Start from a tool

    Search for the job or open a tool from the menu. When the result is ready, tap it in Results and pick the next tool under “Use it in”.

  • Keep the steps

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  • Come back later

    Open My recipes in the same browser, on the same device, and run a recipe on a new file. A recipe stays there until you delete it or clear your browser data.

Finding tools again

Every tool and every recipe has its own address.

  • Bookmark it

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  • On your home screen

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  • Your own recipes

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  • The stars

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Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari
  2. Tap Share (the square with the arrow)
  3. Choose “Add to Home Screen”, then Add

Android

  1. Open the tool in Chrome
  2. Tap the menu (⋮) at the top right
  3. Choose “Add to Home screen” or “Install app”

Computer

  1. Open the tool in Chrome or Edge
  2. Click the install icon in the address bar
  3. Choose Install

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