HEX8 to OKLCh | Color Code Converter

HEX8 to OKLCh is a free online tool that converts HEX8 to OKLCh, helping you quickly convert colors and switch between formats in web design, front-end development, and graphic design. HEX8 is Adds two transparency digits on top of HEX, in the form #RRGGBBAA. OKLCh is A perceptually uniform color space recommended by modern CSS, expressed with lightness L, chroma C, and hue H. At its core, HEX8 to OKLCh takes a color value expressed in HEX8 and converts it into OKLCh using a mathematical algorithm. The tool shows the result as both a visual color swatch and a complete CSS string, and you can copy it to the clipboard with a single click—no manual calculation or lookup tables required. This makes color code conversion fast, accurate, and reproducible, and it is suitable for designers, front-end developers, UI engineers, and anyone else who works with color.

What Is HEX8 to OKLCh

HEX8 is a hexadecimal color with transparency, in the form #RRGGBBAA for a total of 8 digits. The first 6 digits are the same as a regular HEX, and the last 2 represent the Alpha transparency. OKLCh is a polar color space based on OKLab, describing color with lightness (L), chroma (C), and hue (H). It is the modern color format recommended by CSS Color 4. Take the first 6 digits, convert to RGB and OKLab, and finally to the polar OKLCh, discarding Alpha.

How to Use HEX8 to OKLCh

Using this HEX8 to OKLCh tool is very simple and takes just three steps. First, select HEX8 from the "Source Color Unit" dropdown on the left (it is selected by default), and enter the HEX8 value you want to convert in the input card. Second, select OKLCh from the "Target Color Unit" dropdown on the right; the tool instantly calculates and displays the corresponding OKLCh value, along with a color swatch preview and the complete CSS string, so you can confirm the color and format at a glance. Third, once you are happy with the result, click the "Copy" button to copy the OKLCh value to your clipboard and paste it straight into your code or design software. If you picked the wrong source or target unit, click the "⇄" button in the middle to swap them with one click. The whole process requires no registration and no data upload—all calculations run locally in your browser.

Use Cases for HEX8 to OKLCh

Use this when a modern CSS design system needs OKLCh. Modern CSS, gradients that need transparency, and design systems that express brand colors with transparency. Modern CSS design systems, situations that need smooth color scales, and the color schemes of next-generation design tools such as Tailwind and Radix.

How HEX8 to OKLCh Works

Take the first 6 digits, convert to RGB and OKLab, and finally to the polar OKLCh, discarding Alpha. HEX8 is essentially the hexadecimal form of RGBA: the three RGB channels and the Alpha channel are each converted to two hexadecimal digits, for example rgba(255,87,51,0.5) corresponds to #FF573380. OKLab is a perceptually uniform color space proposed by Björn Ottosson. It is cheaper to compute than CIE Lab and has better hue uniformity. OKLCh is its polar form, sitting between HSL and Lab and balancing readability with precision.

Tips for Using HEX8 to OKLCh

Alpha is discarded. The L range of OKLCh is 0-1, very different from the 0-255 of HEX, so watch out for the range change. HEX8 is more compact than RGBA and works well in CSS variables, but it is less readable than RGBA, so teams should add comments when collaborating. The L range in OKLCh is 0-1 (not 0-100), and C is generally between 0 and 0.4. When generating color scales with it, all colors share a more consistent perceived lightness, avoiding the problem in traditional HSL scales where blue looks dark and yellow looks bright.

Frequently Asked Questions (FAQ)

Does HEX8 to OKLCh keep the transparency?

No. OKLCh contains no transparency.

Is the L of OKLCh the same as the L of HSL?

No. The L of OKLCh is perceptual lightness with a range of 0-1.

Does OKLCh work in all browsers?

Chrome 111+, Safari 15.4+, and Firefox 113+ support it.

How is the transparency of HEX8 calculated?

The last two digits are the hexadecimal value of Alpha: FF means fully opaque, 80 means about 50%, and 00 means fully transparent.

Do all browsers support HEX8?

All major modern browsers support it, including Chrome, Firefox, Safari, and Edge. IE does not.

What is the difference between OKLCh and LCh?

Both are polar color spaces, but OKLCh is based on OKLab, so it is simpler to compute and has better hue uniformity. LCh is based on CIE Lab, which has a longer history and broader support in color management software.

Can OKLCh be used in all browsers?

Chrome 111+, Safari 15.4+, and Firefox 113+ support it. If you need to support older browsers, you can use sRGB as a fallback.

Can I convert in the opposite direction?

Yes. You can go directly to the "OKLCh to HEX8" page, or click the "⇄" swap button in the middle of the current page to exchange the source and target units and convert in the opposite direction. The reverse conversion is just as precise, because the color conversion math is reversible.

Can I use the conversion results commercially?

Yes. Color values are numerical information and involve no copyright issues, so you are free to use the conversion results in websites, apps, design work, or commercial projects without authorization or attribution. Do note, however: if the original color comes from material that someone else holds the copyright to, using the color itself is unrestricted, but the copyright to the original material still belongs to its author.

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