HSL to HWB | Color Code Converter | Color Conversion
Online HSL to HWB tool: enter a HSL color value to convert it to HWB 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)
HWB
hwb(11 20% 0%)
H
11
W
20
B
0
All Color Conversion Combinations
132 itemsAbout HSL to HWB
HSL to HWB is a free online tool that converts HSL to HWB, 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). HWB is Describes color through hue (H), whiteness (W), and blackness (B); a format introduced in CSS Color 4. At its core, HSL to HWB takes a color value expressed in HSL and converts it into HWB 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 HWB
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%. HWB describes color through hue (H), whiteness (W), and blackness (B). It is a format added in CSS Color 4. H is 0-360°, and W and B are 0-100%. First convert HSL to RGB, then to HSV, and finally compute W and B according to the HWB definition.
How to Use HSL to HWB
Using this HSL to HWB 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 HWB from the "Target Color Unit" dropdown on the right; the tool instantly calculates and displays the corresponding HWB 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 HWB 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 HWB
Use this when a modern CSS project needs HWB, or for color tuning that follows an "add white and black" approach. Generating color schemes and adjusting hue or brightness, such as producing shades of a single color family or building a color palette tool. Modern CSS projects, color-tuning tasks that need intuitive hue adjustment, and color schemes that complement HSL.
How HSL to HWB Works
First convert HSL to RGB, then to HSV, and finally compute W and B according to the HWB definition. 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. The intuitive meaning of HWB is: first choose a pure hue, then add white (to lighten) or black (to darken) to it. W and B cannot both exceed 100%, and when their sum exceeds 100% they are normalized proportionally.
Tips for Using HSL to HWB
HSL and HWB share the same hue reference point, both 0-360°, but they control light and dark differently; HWB is closer to the physical experience of mixing paint. 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. HWB is closer to the intuition of "adding white or black to paint" than HSL. W=B=0 gives a pure color, and W+B=100% gives gray.
Frequently Asked Questions (FAQ)
Is the H of HWB the same as the H of HSL?
Yes. Both models use hue from 0-360° with the same reference point.
Can the W and B of HWB both be large at the same time?
No. When W+B exceeds 100% it is normalized proportionally.
Which browsers support HWB?
Modern browsers such as Chrome 101+, Safari 15+, and Firefox 96+.
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.
What is the difference between HWB and HSL?
HSL controls lightness through the L channel, while HWB controls lightening and darkening separately through whiteness W and blackness B; the latter is closer to the physical experience of mixing paint.
Which browsers support HWB?
Modern browsers such as Chrome 101+, Safari 15+, and Firefox 96+ support it; older browsers may not.
Can I convert in the opposite direction?
Yes. You can go directly to the "HWB 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.