HSL to LCh | Color Code Converter | Color Conversion
Online HSL to LCh tool: enter a HSL color value to convert it to LCh in real time, with one-click copy of the result. Free and no registration required.
HSLEnter or adjust the color values
rgba(255, 87, 51, 1)
LCh
lch(60.18% 82.49 41.2)
L
60.18
C
82.49
H
41.2
All Color Conversion Combinations
132 itemsAbout HSL to LCh
HSL to LCh is a free online tool that converts HSL to LCh, helping you quickly convert colors and switch between formats in web design, front-end development, and graphic design. HSL is Describes color along three dimensions: hue (H), saturation (S), and lightness (L). LCh is The polar form of Lab, describing color with lightness L, chroma C, and hue H. At its core, HSL to LCh takes a color value expressed in HSL and converts it into LCh 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 HSL to LCh
HSL describes color along three dimensions: hue (H), saturation (S), and lightness (L). Hue is 0-360°, while saturation and lightness are both 0-100%. LCh is the polar form of Lab, describing color with lightness (L), chroma (C), and hue (H). It is more intuitive than Lab and closer to the way HSL is used. First convert HSL to RGB, then to Lab, and finally turn a and b into the polar C and H.
How to Use HSL to LCh
Using this HSL to LCh tool is very simple and takes just three steps. First, select HSL from the "Source Color Unit" dropdown on the left (it is selected by default), and enter the HSL value you want to convert in the input card. Second, select LCh from the "Target Color Unit" dropdown on the right; the tool instantly calculates and displays the corresponding LCh 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 LCh 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 HSL to LCh
Use this when switching between HSL and LCh, or when migrating an HSL color scale to LCh. Generating color schemes and adjusting hue or brightness, such as producing shades of a single color family or building a color palette tool. Generating color scales in design systems, situations where only the chroma changes while the hue stays fixed, and modern CSS color schemes.
How HSL to LCh Works
First convert HSL to RGB, then to Lab, and finally turn a and b into the polar C and H. HSL remaps the RGB color cube into cylindrical coordinates: hue represents the angle, saturation the distance from the central axis, and lightness the vertical height. This fits the way humans perceive color more naturally. LCh and Lab convert to each other losslessly: L stays the same, C = √(a²+b²), and H = atan2(b, a). This turns the two orthogonal chroma axes into "chroma + hue", which fits how humans think.
Tips for Using HSL to LCh
The reference point for H in LCh differs from that in HSL, so the same visual hue has a different number; recalibrate when migrating across models. In HSL, color is most saturated at 50% lightness and trends toward black or white as lightness approaches 0% or 100%. Adjusting the hue is the most direct way to generate a similar color. The reference point for H in LCh differs from that in HSL, so the same visual hue has different numbers in LCh and HSL. Migrating directly from HSL to LCh requires recalibrating the hue.
Frequently Asked Questions (FAQ)
Is the H of LCh the same as the H of HSL?
No. The two have different reference points, so the same hue has different numbers.
Does HSL to LCh change the color?
No. The conversion only changes the expression.
Is LCh suitable for building color scales?
Yes, especially for generating a scale of the same hue with different chroma.
What is the difference between HSL and HSV?
The L in HSL stands for lightness (0% black, 100% white), while the V in HSV stands for value (0% black, 100% brightest). At the same hue and saturation, the two feel different in brightness/value.
Why does adjusting HSL lightness change the color so much?
Because lightness directly controls how much the color is mixed with black or white. It is most vivid near 50%, and it trends toward the extremes at either end.
Both LCh and HSL can adjust hue, so what is the difference?
The hue in HSL is perceptually uneven, so the same angular difference looks different under different hues. The hue in LCh is more perceptually uniform and better suited to building color scales.
Which is easier to use, LCh or Lab?
Use Lab for mathematical computation and LCh for manual color adjustment. The two are equivalent; only the coordinate form differs.
Can I convert in the opposite direction?
Yes. You can go directly to the "LCh to HSL" 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.