HSL to Pantone Converter
Set hue, saturation, and lightness to find the closest Pantone Solid Coated color. HSL is the CSS-native color model — hsl(h, s%, l%) is valid CSS and supported everywhere — so this converter is the fastest way to go from a CSS color to a print-ready Pantone code. Matching uses Delta E 2000 against all 2,371 Pantone colors, and the top eight matches are ranked by perceptual similarity.
What is HSL to Pantone conversion?
HSL (Hue, Saturation, Lightness) is the color model that CSS uses natively. Hue is an angle on the color wheel (0° red, 120° green, 240° blue); saturation is the purity of the hue (0% gray to 100% fully saturated); lightness runs from black (0%) through the saturated hue (50%) to white (100%). Because HSL is what CSS understands directly, it is the natural model for any web designer working in raw CSS — no conversion is needed to use an HSL value in a stylesheet.
Pantone is a print specification system. Its 2,371 Solid Coated colors are physical ink mixes, so no HSL value maps exactly to any of them. This tool finds the nearest neighbor using Delta E 2000, the CIE standard for perceptual color difference. A Delta E under 2 is typically imperceptible; over 5 is clearly different; over 10 is only loosely related.
How to use this converter
- Set the hue slider to your target angle (0° = red, 60° = yellow, 120° = green, 180° = cyan, 240° = blue, 300° = magenta).
- Adjust saturation to control purity (0% gray to 100% fully saturated).
- Adjust lightness to control brightness (0% black, 50% the saturated hue, 100% white).
- Read the top 8 Pantone matches below — the first row is the closest, with its Delta E value and HEX approximation.
How the conversion works
The conversion runs in three stages. First, HSL converts to RGB using the standard CSS formula: C = (1 − |2L − 1|) × S, X = C × (1 − |(H/60 mod 2) − 1|), m = L − C/2. The resulting RGB triplet is then converted to CIELAB via the sRGB → XYZ → LAB transform (D65 white point). Finally, Delta E 2000 is computed between the target LAB and each Pantone color's LAB, and the results are ranked by lowest Delta E.
Delta E 2000 weights lightness, chroma, and hue based on human visual sensitivity, so it is a better perceptual metric than raw RGB distance. The approximation is entirely in the last step — matching screen colors to print inks is a physical problem that no formula can solve exactly. The best verification is always a physical Pantone chip under the lighting where the print will be seen.
Accuracy and limitations
- Screen vs print. HSL is an sRGB screen color. Pantone is print ink. Even a Delta E 0 match on screen will look different on paper because the two media reflect and emit light differently.
- Pantone library scope. This tool matches against the Solid Coated (C) library only. Pantone also publishes Solid Uncoated (U) and Fashion, Home + Interiors (TCX/TPG) libraries — the same HSL value may have different matches in each.
- Display calibration. The swatch you see depends on your monitor's calibration and the ambient lighting. Two designers on two machines can see meaningfully different matches.
Use cases
- CSS-native design to print. A web designer working entirely in CSS needs the print-ready Pantone equivalent of their on-screen color.
- Brand color specification. Defining a brand color in HSL for digital, then translating to Pantone for print collateral and packaging.
- Programmatic color generation. JavaScript that generates palettes in HSL (adjusting lightness for tints/shades, rotating hue for accents) needs a Pantone code for any print output.
- Design system tokens. A design system that stores colors as HSL strings needs a documented Pantone equivalent for print usage.
- Web-to-print handoff. Handing a web-first project to a print designer: the HSL values plus their Pantone matches form a clean handoff.
Common mistakes
- Confusing HSL with HSV — for the same color, HSL typically shows lower lightness than HSV shows value. HSL (0, 100%, 50%) is pure red; HSV (0, 100%, 50%) is a dark red.
- Assuming Delta E < 3 means "identical" — it means "close enough that most viewers won't notice side-by-side".
- Ignoring the library — Solid Coated ≠ Solid Uncoated. A match against Solid Coated does not guarantee a match against Solid Uncoated.
- Trusting the screen preview for production — always verify with a physical Pantone chip.
HSL vs HSV vs RGB
| Attribute | HSL | HSV | RGB |
|---|---|---|---|
| Channels | Hue, Saturation, Lightness | Hue, Saturation, Value | Red, Green, Blue |
| Pure red is | H=0, S=100, L=50 | H=0, S=100, V=100 | (255, 0, 0) |
| White is | S=0, L=100 | S=0, V=100 | (255, 255, 255) |
| Black is | S=0, L=0 | V=0 | (0, 0, 0) |
| CSS-native | yes — hsl(h, s%, l%) | no | yes — rgb(r, g, b) |
Frequently asked questions
How do I convert HSL to Pantone?
Set hue (0–360°), saturation (0–100%), and lightness (0–100%) using the sliders. The converter computes the exact RGB triplet, converts to CIELAB, and finds the closest Pantone Solid Coated match using Delta E 2000 — the CIE standard for perceptual color difference. The top eight Pantone matches are ranked by lowest Delta E, so the first row is the closest visual match.
What is HSL?
HSL (Hue, Saturation, Lightness) is a color model where hue is an angle on the color wheel (0° red, 120° green, 240° blue), saturation is the purity (0% gray, 100% fully saturated), and lightness is the brightness (0% black, 50% the "true" saturated color, 100% white). HSL is the color model used by CSS — hsl(210, 70%, 50%) is a valid CSS color — which makes it the natural choice for web designers who need to express a color as code.
What is the difference between HSL and HSV?
HSL and HSV share the same hue axis but differ in their other two channels. HSV stores brightness as "value" (the maximum RGB channel) with saturation going to zero only at pure black. HSL stores brightness as "lightness" (the average of the max and min channels) with saturation going to zero at both pure white (L=100%) and pure black (L=0%), which makes the model symmetric. For the same color, HSL typically reports a lighter lightness than HSV reports value. HSL (0, 100%, 50%) and HSV (0, 100%, 100%) both describe pure red — the same color, different numbers.
Is HSL to Pantone conversion exact?
No. HSL describes an sRGB screen color; Pantone describes printed ink. Every HSL value maps to exactly one RGB triplet, which maps to one approximate Pantone match — but that match is a visual approximation, not what a specific printer will actually produce. Screens emit light and paper reflects it, so the same color looks different on paper than it does on screen.
Why use HSL instead of HSV for design?
Because HSL is CSS-native — hsl(h, s%, l%) is valid CSS and supported everywhere. It is also mathematically symmetric around lightness (the CSS spec defines the color wheel this way), which makes it better suited for generating tints and shades programmatically: adjusting L from 0% to 50% to 100% walks you cleanly from black through the saturated hue to white. If you are generating palettes with JavaScript or writing CSS, HSL is the natural model.
Can I use this for print specification?
Use it as a starting point, not a final spec. The Pantone codes shown are visually close but not authoritative for print. Take the top match, get a physical Pantone chip, and compare it against your intended color under the lighting conditions where the print will be seen. If they match, you have a valid specification. If not, adjust the HSL values or try the next-closest match.